South America · Fish by region
Fish of Paraná–La Plata & the Southern Cone
The Paraná, Paraguay, Uruguay and the Pantanal — the La Plata basin of Brazil's south, Argentina and Paraguay.
887 species across 11 families
The Río de la Plata basin — Paraná, Paraguay and Uruguay rivers — together with the Pantanal wetland and the coastal Laguna dos Patos, across southern Brazil, Argentina, Paraguay, Uruguay and Chaco Bolivia. Placed by FEOW ecoregion, with Argentina, Paraguay and Uruguay defaulting here.
887 of 887 species
Cichlids · 87
- Aequidens pirilampo
- Aequidens plagiozonatus
- Apistogramma borellii · Umbrella cichlid
- Apistogramma commbrae · Corumbá dwarf cichlid
- Apistogramma inconspicua
- Apistogramma trifasciata · Three-striped dwarf cichlid
- Astronotus crassipinnis
- Australoheros acaroides
- Australoheros angiru
- Australoheros charrua
- Australoheros facetus · Chanchita
- Australoheros forquilha
- Australoheros guarani
- Australoheros kaaygua
- Australoheros mboapari
- Australoheros minuano
- Australoheros ricani
- Australoheros scitulus · Castañeta
- Australoheros taura
- Australoheros tavaresi
- Australoheros tembe
- Australoheros ykeregua
- Bujurquina oenolaemus · Wine-throat acara
- Bujurquina vittata
- Chaetobranchopsis australis
- Cichlasoma dimerus · Chanchita
- Cichlasoma paranaense
- Cichlasoma portalegrense · Port cichlid
- Cichlasoma pusillum
- Crenicichla ama
- Crenicichla aravera
- Crenicichla celidochilus
- Crenicichla empheres
- Crenicichla gaucho
- Crenicichla gillmorlisi
- Crenicichla hadrostigma
- Crenicichla haroldoi
- Crenicichla hu
- Crenicichla igara
- Crenicichla iguassuensis
- Crenicichla jaguarensis
- Crenicichla jupiaensis
- Crenicichla jurubi
- Crenicichla lepidota · Two-spot pike cichlid
- Crenicichla lucenai
- Crenicichla maculata
- Crenicichla mandelburgeri
- Crenicichla minuano
- Crenicichla missioneira
- Crenicichla niederleinii
- Crenicichla prenda
- Crenicichla punctata
- Crenicichla scottii
- Crenicichla semifasciata
- Crenicichla tapii
- Crenicichla tendybaguassu · Big-lipped pike cichlid
- Crenicichla tesay
- Crenicichla tuca
- Crenicichla vittata · Cabeza amarga
- Crenicichla yaha
- Crenicichla yjhui
- Crenicichla ypo
- Geophagus brasiliensis
- Gymnogeophagus australis
- Gymnogeophagus balzanii · Paraguay eartheater
- Gymnogeophagus caaguazuensis
- Gymnogeophagus che
- Gymnogeophagus constellatus
- Gymnogeophagus gymnogenys
- Gymnogeophagus jaryi
- Gymnogeophagus labiatus
- Gymnogeophagus lipokarenos
- Gymnogeophagus mekinos
- Gymnogeophagus meridionalis
- Gymnogeophagus missioneiro
- Gymnogeophagus pseudolabiatus
- Gymnogeophagus rhabdotus
- Gymnogeophagus setequedas
- Gymnogeophagus taroba
- Gymnogeophagus terrapurpura
- Gymnogeophagus tiraparae
- Laetacara dorsigera · Red-breasted acara
- Mesonauta festivus
- Satanoperca pappaterra · Pantanal eartheater
- Satanoperca setepele
- Saxatilia britskii
- Saxatilia ploegi
Catfish · 42
- Amaralia oviraptor · Southern banjo catfish
- Anadoras weddellii · Talking catfish
- Auchenipterus nigripinnis · Paraguay shark-cat
- Auchenipterus osteomystax
- Bagrus tucumanus
- Batrochoglanis melanurus
- Bunocephalus doriae · Banjo catfish
- Bunocephalus erondinae
- Bunocephalus hertzi · Banjo catfish
- Bunocephalus larai · Banjo catfish
- Callichthys callichthys · Cascarudo
- Centromochlus britskii
- Ernstichthys taquari
- Hoplosternum littorale · Cascudo
- Lepthoplosternum pectorale · Tamboatá
- Megalechis thoracata · Spotted hoplo
- Microcambeva caissara
- Microglanis carlae
- Microglanis cottoides · Southern bumblebee catfish
- Microglanis eurystoma
- Microglanis garavelloi
- Microglanis leniceae
- Microglanis maculatus
- Microglanis malabarbai · Dwarf marbled catfish
- Microglanis nigrolineatus
- Oxydoras kneri · Kner's thorny catfish
- Paracanthopoma jiparanaensis
- Phenacorhamdia bermejo
- Pimelodella gracilis · Graceful pimelodella
- Pimelodus blochii · Four-line Pictus
- Pimelodus ornatus · Ornate pimelodus
- Pinirampus pirinampu · Flat-whiskered catfish
- Pseudobunocephalus bifidus · Banjo catfish
- Pseudobunocephalus iheringii
- Pseudobunocephalus rugosus · Banjo catfish
- Pseudoplatystoma corruscans · Spotted sorubim
- Pseudoplatystoma fasciatum · Barred sorubim
- Pseudoplatystoma reticulatum · Reticulated sorubim
- Rhamdia quelen · South American catfish
- Tatia boemia
- Tatia jaracatia · Bagre-sapo
- Xyliphius barbatus · Bearded banjo catfish
Corydoras · 26
- Aspidoras aldebaran · Aldebaran aspidoras
- Aspidoras fuscoguttatus · Darkspotted catfish
- Aspidoras lakoi · Chessboard catfish
- Brochis britskii · Giant brochis
- Corydoras areio · Hump cory
- Corydoras aurofrenatus · Gold-bridled cory
- Corydoras carlae · Carla's cory
- Corydoras difluviatilis · Sparano cory
- Corydoras diphyes · Variable cory
- Corydoras ehrhardti · Ehrhardt's cory
- Corydoras flaveolus · Yellow cory
- Corydoras gladysae · Gladys' cory
- Corydoras gryphus · Dragon fin cory
- Corydoras hastatus · Dwarf corydoras
- Corydoras lacrimostigmata · Teardrop cory
- Corydoras longipinnis · Long-finned cory
- Corydoras micracanthus · Andes cory
- Corydoras pantanalensis · Pantanal cory
- Corydoras petracinii · Petracini's cory
- Corydoras polystictus · Many-spotted cory
- Corydoras undulatus · Wavy catfish
- Hoplisoma osvaldoi · Bermejo cory
- Hoplisoma paleatum · Peppered cory
- Osteogaster aenea · Bronze corydoras
- Scleromystax macropterus · Sailfin cory
- Scleromystax reisi · Reis's cory
Eels · 1
- Synbranchus marmoratus · Marbled swamp eel
Killifish · 72
- Acantholebias luteoflammulatus · Yellow-spotted pearlfish
- Acantholebias quirogai
- Acrolebias carvalhoi
- Amatolebias patriciae
- Anablepsoides taeniatus
- Argolebias nigripinnis · Blackfin pearlfish
- Atlantirivulus riograndensis
- Austrolebias bellottii · Argentine pearlfish
- Austrolebias charrua
- Austrolebias juanlangi
- Austrolebias litzi
- Austrolebias luzardoi
- Austrolebias melanoorus
- Austrolebias minuano
- Austrolebias nachtigalli
- Austrolebias paranaensis
- Austrolebias paucisquama
- Austrolebias toba
- Austrolebias univentripinnis
- Austrolebias vandenbergi · Van den Berg's Pearlfish
- Austrolebias varzeae
- Cynopoecilus intimus · Peixe-anual
- Cynopoecilus melanotaenia
- Cynopoecilus multipapillatus
- Cynopoecilus nigrovittatus
- Cypholebias cinereus
- Cypholebias robustus
- Garcialebias adloffi
- Garcialebias reicherti
- Garcialebias viarius · Multi-colored pearlfish
- Gymnolebias gymnoventris
- Hypsolebias flammeus
- Hypsolebias notatus
- Leptopanchax aureoguttatus
- Maratecoara lacortei
- Matilebias affinis
- Matilebias alexandri
- Matilebias cyaneus
- Matilebias duraznensis
- Matilebias ibicuiensis · Peixe-anual
- Matilebias periodicus
- Megalebias wolterstorffi · Wolterstorff's pearlfish
- Melanorivulus apiamici
- Melanorivulus dapazi
- Melanorivulus illuminatus
- Melanorivulus nigromarginatus
- Melanorivulus pictus
- Melanorivulus planaltinus
- Melanorivulus punctatus
- Moema heterostigma
- Neofundulus ornatipinnis
- Neofundulus paraguayensis
- Neofundulus parvipinnis
- Papiliolebias bitteri
- Plesiolebias glaucopterus
- Pterolebias longipinnis · Long-finned killifish
- Pterolebias phasianus
- Simpsonichthys boitonei · Boiton's pearlfish
- Simpsonichthys brunoi
- Simpsonichthys cholopteryx
- Simpsonichthys nigromaculatus
- Simpsonichthys parallelus
- Spectrolebias filamentosus
- Spectrolebias reticulatus
- Stenolebias bellus
- Stenolebias damascenoi
- Titanolebias cheradophilus
- Titanolebias elongatus · Elongated pearlfish
- Titanolebias monstrosus · Giant pearlfish
- Titanolebias prognathus
- Trigonectes aplocheiloides
- Trigonectes balzanii
Knifefishes · 37
- Apteronotus acidops
- Apteronotus albifrons · Black ghost knifefish
- Apteronotus brasiliensis · Brazilian ghost knifefish
- Apteronotus caudimaculosus
- Apteronotus paranaensis
- Brachyhypopomus bombilla · Bombilla knifefish
- Brachyhypopomus brevirostris · Bluntnose knifefish
- Brachyhypopomus draco
- Brachyhypopomus gauderio
- Brachyhypopomus pinnicaudatus
- Eigenmannia catira
- Eigenmannia correntes
- Eigenmannia desantanai
- Eigenmannia dutrai
- Eigenmannia guairaca
- Eigenmannia trilineata · Glass knifefish
- Eigenmannia vicentespelaea · Cave glass knifefish
- Eigenmannia virescens · Glass knifefish
- Gymnorhamphichthys britskii
- Gymnorhamphichthys rondoni · Mousetail knifefish
- Gymnotus carapo · Banded knifefish
- Gymnotus chimarrao
- Gymnotus cuia
- Gymnotus inaequilabiatus · Tuvira
- Gymnotus omarorum
- Gymnotus pantanal · Pantanal banded knifefish
- Gymnotus pantherinus · Panther knifefish
- Gymnotus paraguensis · Morenita
- Gymnotus refugio
- Hypopygus lepturus
- Hypopygus nijsseni · Nijssen's Hypopygus
- Porotergus ellisi · Ellis's ghost knifefish
- Rhamphichthys hahni · Roundnose knifefish
- Sternarchella curvioperculata
- Sternarchorhynchus britskii
- Tembeassu marauna
- Tembeassu titanicus
Livebearers · 41
- Cnesterodon brevirostratus · Barrigudinho-de-focinho-curto
- Cnesterodon carnegiei · Carnegie's toothcarp
- Cnesterodon decemmaculatus · Ten spotted live-bearer
- Cnesterodon holopteros · Whole fin toothcarp
- Cnesterodon hypselurus · Cilida toothcarp
- Cnesterodon iguape · Iporanga tooth carp
- Cnesterodon omorgmatos · Torres toothcarp
- Cnesterodon pirai · Almeida toothcarp
- Cnesterodon raddai · Resistencia toothcarp
- Jenynsia diphyes · Iguaçu livebearer
- Jenynsia eigenmanni · Creek livebearer
- Jenynsia eirmostigma · Dashed livebearer
- Jenynsia lineata · Onesided livebearer
- Jenynsia luxata · Tajamar livebearer
- Jenynsia maculata · Spotted Salta livebearer
- Jenynsia obscura · Córdoba livebearer
- Jenynsia onca · Jaguar livebearer
- Jenynsia sanctaecatarinae · Meleiro livebearer
- Jenynsia sulfurica
- Jenynsia tucumana · Tucumán livebearer
- Jenynsia unitaenia · Onestriped livebearer
- Phalloceros buckupi · Jacareí toothcarp
- Phalloceros caudimaculatus · Dusky millions fish
- Phalloceros circummontanus
- Phalloceros harpagos · Ellipse spot toothcarp
- Phalloceros heptaktinos · Seven ray toothcarp
- Phalloceros megapolos · Lindo toothcarp
- Phalloceros mimbi
- Phalloceros pellos · Antonina toothcarp
- Phalloceros reisi · Apiaí toothcarp
- Phalloceros spiloura · Three point toothcarp
- Phalloceros titthos · Breast toothcarp
- Phalloptychus januarius · January toothcarp
- Phallotorynus dispilos · Two spot toothcarp
- Phallotorynus fasciolatus · Thinstribed toothcarp
- Phallotorynus jucundus · Antler toothcarp
- Phallotorynus pankalos · Bellyspotted toothcarp
- Phallotorynus psittakos · Clementina toothcarp
- Phallotorynus victoriae · Argentinian toothcarp
- Poecilia hasemani · Haseman's toothcarp
- Poecilia vivipara · Eye spot toothcarp
Piranhas & Pacus · 112
- Abramites hypselonotus · Marbled headstander
- Acestrorhynchus lacustris
- Acestrorhynchus pantaneiro · Pantanal pike characin
- Apareiodon affinis · Darter characin
- Apareiodon ibitiensis
- Apareiodon piracicabae · Piracicaba characin
- Apareiodon vittatus · Pearlscale characin
- Apareiodon vladii
- Arhinolemur obtusidens · Boga
- Brycon hilarii · Piraputanga
- Brycon nattereri · Pirapitinga
- Brycon orbignyanus · Piracanjuba
- Characidium borellii · Darter characin
- Characidium chicoi
- Characidium etzeli
- Characidium fasciatum · Darter characin
- Characidium gomesi · Gomes's darter
- Characidium heirmostigmata
- Characidium laterale · Piquira
- Characidium nupelia
- Characidium oiticicai
- Characidium onca
- Characidium orientale
- Characidium pterostictum · Darter characin
- Characidium rachovii · Rachow's darter tetra
- Characidium schubarti · Schubart's darter
- Characidium serrano
- Characidium stigmosum
- Characidium tenue · Darter tetra
- Characidium travassosi
- Characidium urucum · Mocinha-vermelha
- Characidium vestigipinne
- Characidium xanthopterum
- Clupeacharax anchoveoides · Anchovy characin
- Curimatella dorsalis
- Curimatopsis myersi
- Cyphocharax gillii
- Cyphocharax modestus
- Cyphocharax naegelii
- Cyphocharax platanus
- Cyphocharax saladensis · Rosy curimata
- Cyphocharax santacatarinae
- Cyphocharax spilotus
- Cyphocharax vanderi · Saguiru
- Cyphocharax voga · Biru
- Engraulisoma taeniatum
- Hemiodus orthonops
- Hoplerythrinus unitaeniatus · Striped trahira
- Hoplias argentinensis
- Hoplias australis
- Hoplias malabaricus · Trahira
- Hoplias mbigua
- Hoplias misionera
- Hydrolycus armatus · Payara
- Leporellus pictus
- Leporellus vittatus · Yellow rabbit characin
- Leporinus amae · Parrot leporinus
- Leporinus amblyrhynchus · Black-banded leporinus
- Leporinus elongatus · Black-banded leporinus
- Leporinus friderici · Threespot leporinus
- Leporinus lacustris
- Leporinus macrocephalus · Piauçu
- Leporinus microphthalmus
- Leporinus octofasciatus · Eight-banded leporinus
- Leporinus pachyurus
- Leporinus paranensis · Piau
- Leporinus piavussu · Piavuçu
- Leporinus platycephalus
- Leporinus tigrinus · Tiger headstander
- Metynnis cuiaba
- Metynnis hypsauchen · Silver dollar
- Metynnis maculatus · Spotted metynnis
- Metynnis mola · Silver dollar
- Metynnis otuquensis · Silver dollar
- Myloplus levis · Moon pacu
- Myloplus tiete · Tiete silver dollar
- Mylossoma duriventre · Silver mylossoma
- Parodon bifasciatus
- Parodon carrikeri
- Parodon moreirai
- Parodon nasus · Foxnose characin
- Piaractus mesopotamicus · Pacu
- Potamorhina squamoralevis
- Prochilodus lineatus · Streaked prochilod
- Prochilodus vimboides · Vimboides
- Psectrogaster curviventris
- Pygocentrus nattereri · Red-bellied piranha
- Salminus brasiliensis · Dorado
- Salminus hilarii · Dorado
- Schizodon altoparanae
- Schizodon australis
- Schizodon borellii · Borelli's headstander
- Schizodon intermedius
- Schizodon isognathus
- Schizodon jacuiensis
- Schizodon nasutus
- Schizodon platae
- Schizodon succinctus
- Serrasalmus auriventris
- Serrasalmus emarginatus
- Serrasalmus maculatus · Maculatus piranha
- Serrasalmus marginatus · Marginate piranha
- Serrasalmus nigricauda
- Serrasalmus spilopleura · Speckled piranha
- Steindachnerina biornata
- Steindachnerina brevipinna
- Steindachnerina conspersa
- Steindachnerina corumbae
- Steindachnerina insculpta · Papa-terra
- Triportheus angulatus · Dusky narrow hatchetfish
- Triportheus nematurus
- Triportheus pantanensis
Plecos · 233
- Ancistrus abilhoai
- Ancistrus agostinhoi
- Ancistrus brevipinnis
- Ancistrus cirrhosus · Bristlenose pleco
- Ancistrus claro · LDA008
- Ancistrus cryptophthalmus · Blind Cave Bristlenose
- Ancistrus cuiabae · Cuiabá Bristlenose
- Ancistrus dubius · Dubious Bristlenose
- Ancistrus formoso · Blind Cave Bristlenose
- Ancistrus megacanthus
- Ancistrus mullerae · Müller's Bristlenose Pleco
- Ancistrus pirareta · LDA053
- Ancistrus piriformis · Pear-Shaped Bristlenose
- Ancistrus taunayi · Uruguay Bristlenose
- Brochiloricaria chauliodon · Orchid leather-neck whiptail
- Corumbataia britskii
- Corumbataia cuestae · Tietê Cascudinho
- Corumbataia liliai
- Corumbataia lucianoi
- Curculionichthys coxipone
- Curculionichthys insperatus
- Curculionichthys oliveirai
- Curculionichthys paresi
- Curculionichthys piracanjuba
- Epactionotus yasi
- Farlowella amazonum · Amazon Twig Catfish
- Farlowella hahni · Hahn's twig catfish
- Farlowella isbruckeri · Twig catfish
- Farlowella jauruensis · Twig Catfish
- Farlowella kirane
- Farlowella paraguayensis · Paraguay Twig Catfish
- Harttia absaberi
- Harttia gracilis · Cascudo-rabo-seco-do-paraná
- Harttia kronei · Krone's Harttia
- Hemiancistrus chlorostictus
- Hemiancistrus fuliginosus
- Hemiancistrus meizospilos · Southern Orange-spotted Pleco
- Hemiancistrus punctulatus · Southern Blackspotted Pleco
- Hemiancistrus votouro
- Hemiodontichthys acipenserinus · Pinocchio Whiptail Catfish
- Hisonotus aky · Emerald Oto
- Hisonotus alberti
- Hisonotus armatus
- Hisonotus brunneus · Brown Dwarf Oto
- Hisonotus carreiro
- Hisonotus charrua · Charrúa Otocinclus-like Pleco
- Hisonotus depressicauda
- Hisonotus francirochai
- Hisonotus heterogaster
- Hisonotus hungy
- Hisonotus iota
- Hisonotus laevior · Cascudinho-pardo
- Hisonotus leucofrenatus · Niger Oto
- Hisonotus leucophrys · White-browed Otocinclus
- Hisonotus maculipinnis
- Hisonotus megaloplax
- Hisonotus montanus
- Hisonotus nigricauda · Cascudinho
- Hisonotus notopagos
- Hisonotus pachysarkos
- Hisonotus paulinus
- Hisonotus prata
- Hisonotus ringueleti · Ringueleti Cascudinho
- Hisonotus taimensis
- Hisonotus vireo
- Hypoptopoma inexspectatum · Longfinned Hypoptopoma
- Hypostomus albopunctatus · Spotted Paraguay Pleco
- Hypostomus ancistroides · Cascudo
- Hypostomus angipinnatus
- Hypostomus arecuta
- Hypostomus aspilogaster · Jacuhy Pleco
- Hypostomus basilisko · Basilisk Pleco
- Hypostomus borellii · Borelli's pleco
- Hypostomus boulengeri · Boulenger's Pleco
- Hypostomus brevis
- Hypostomus careopinnatus
- Hypostomus caudofasciatus
- Hypostomus cochliodon · Cochliodon Pleco
- Hypostomus commersoni · Commerson's Pleco
- Hypostomus crulsi
- Hypostomus denticulatus
- Hypostomus derbyi · Derby's pleco
- Hypostomus dlouhyi
- Hypostomus fluviatilis
- Hypostomus formosae · Formosa Pleco
- Hypostomus francisci · São Francisco Cascudo
- Hypostomus froehlichi · Froehlich's Pleco
- Hypostomus fuscomaculatus · L233
- Hypostomus heraldoi
- Hypostomus hermanni · Hermann's Pleco
- Hypostomus iheringii · Ihering's Pleco
- Hypostomus isbrueckeri
- Hypostomus itacua
- Hypostomus khimaera
- Hypostomus laplatae · La Plata pleco
- Hypostomus latifrons · Paraguay Pleco
- Hypostomus latirostris
- Hypostomus luteomaculatus · Yellow-spotted Pleco
- Hypostomus luteus · Golden Pleco
- Hypostomus margaritifer · Yellow-spotted Hypostomus
- Hypostomus meleagris · Spotted Pleco
- Hypostomus microstomus
- Hypostomus multidens · Many-toothed Pleco
- Hypostomus mutucae · Mutuca Pleco
- Hypostomus myersi
- Hypostomus nigromaculatus · LDA012
- Hypostomus nigropunctatus · Black-spotted Cascudo
- Hypostomus pantherinus · Panther Pleco
- Hypostomus paranensis · Cascudo
- Hypostomus paulinus · Paulista Pleco
- Hypostomus peckoltoides · L390
- Hypostomus perdido
- Hypostomus piratatu · Piratatu Pleco
- Hypostomus regani · Giant White Spot Pleco
- Hypostomus renestoi
- Hypostomus robertsoni
- Hypostomus roseopunctatus · Rose Common Pleco
- Hypostomus scaphyceps
- Hypostomus spiniger · Spiniger Pleco
- Hypostomus strigaticeps · Cascudo Pintado
- Hypostomus ternetzi · Ternetz's Pleco
- Hypostomus tietensis
- Hypostomus topavae
- Hypostomus uruguayensis · Vieja
- Hypostomus variipictus
- Hypostomus variostictus
- Hypostomus yaku
- Isbrueckerichthys calvus
- Isbrueckerichthys saxicola
- Kronichthys lacerta
- Loricaria apeltogaster
- Loricaria coximensis · Coxim Whiptail
- Loricaria holmbergi
- Loricaria luciae · Lucia's Whiptail
- Loricaria piracicabae
- Loricaria simillima · Marbled Whiptail
- Loricaria tucumanensis
- Loricariichthys anus · Long-lipped Whiptail Catfish
- Loricariichthys edentatus
- Loricariichthys labialis · Lip-brooding Whiptail
- Loricariichthys melanocheilus · Viola
- Loricariichthys nudirostris · Bare-snouted Whiptail
- Loricariichthys platymetopon · Broadhead Whiptail
- Loricariichthys rostratus
- Megalancistrus parananus · L113
- Microlepidogaster arachas
- Microlepidogaster dimorpha
- Microlepidogaster longicolla
- Microlepidogaster perforata · Carandaí Dwarf Pleco
- Neoplecostomus altimontanus
- Neoplecostomus bandeirante
- Neoplecostomus botucatu
- Neoplecostomus corumba
- Neoplecostomus jaguari
- Neoplecostomus langeanii
- Neoplecostomus paranensis · Paraná Neopleco
- Neoplecostomus sapucai
- Neoplecostomus selenae
- Neoplecostomus watersi
- Neoplecostomus yapo
- Otocinclus arnoldi · La Plata Oto
- Otocinclus bororo · Paraguay Dwarf Sucker
- Otocinclus flexilis · Peppered Oto
- Otocinclus mimulus · Mimicry Oto
- Otocinclus vestitus · Pebas Oto
- Otocinclus vittatus · Common Otocinclus
- Otothyropsis alicula
- Otothyropsis biamnicus
- Otothyropsis dialeukos
- Otothyropsis marapoama
- Otothyropsis piribebuy
- Otothyropsis polyodon
- Paraloricaria agastor
- Paraloricaria commersonoides
- Paraloricaria vetula · Viola Catfish
- Pareiorhaphis eurycephalus
- Pareiorhaphis hystrix · Cascudo
- Pareiorhaphis parmula
- Pareiorhaphis splendens · Splendid Needle-jaw Pleco
- Pareiorhaphis vestigipinnis
- Pareiorhina aiuruoca
- Pareiorhina brachyrhyncha
- Pareiorhina carrancas
- Pareiorhina isabelae
- Pareiorhina mystica
- Pareiorhina pelicicei
- Pareiorhina sofiae
- Pogonopoma obscurum
- Proloricaria prolixa · Cascudo chinelo
- Pseudohemiodon devincenzii
- Pseudohemiodon laticeps · Giant Whiptail Catfish
- Pseudohemiodon platycephalus
- Pseudotocinclus tietensis · Tietê Cascudinho
- Pterygoplichthys ambrosettii · Snow King Pleco
- Pterygoplichthys disjunctivus · Vermiculated Sailfin Catfish
- Pyxiloricaria menezesi · Menezes's whiptail catfish
- Rhinelepis aspera · Black Rhino Pleco
- Rhinelepis strigosa
- Ricola macrops · Large-eyed whiptail
- Rineloricaria anhaguapitan
- Rineloricaria anitae
- Rineloricaria aurata · Golden Whiptail
- Rineloricaria baliola
- Rineloricaria cacerensis
- Rineloricaria cadeae
- Rineloricaria capitonia · Violinha
- Rineloricaria catamarcensis
- Rineloricaria felipponei · Felipponei Whiptail
- Rineloricaria hasemani · Haseman's whiptail
- Rineloricaria isaaci
- Rineloricaria kronei
- Rineloricaria lanceolata · Whiptail catfish
- Rineloricaria langei
- Rineloricaria latirostris · Whiptail Catfish
- Rineloricaria lima · Common Whiptail Catfish
- Rineloricaria maacki · Iguaçu Whiptail
- Rineloricaria malabarbai
- Rineloricaria microlepidogaster · Small-scaled Whiptail
- Rineloricaria misionera · Whiptail Catfish
- Rineloricaria pareiacantha
- Rineloricaria parva · Common Whiptail Catfish
- Rineloricaria pentamaculata · Whiptail Catfish
- Rineloricaria reisi · Violinha
- Rineloricaria sanga · Sanga Whiptail
- Rineloricaria setepovos
- Rineloricaria stellata
- Rineloricaria strigilata · Santa Cruz whiptail catfish
- Rineloricaria thrissoceps · Uruguayan Whiptail
- Rineloricaria tropeira
- Rineloricaria zaina · Zaina Whiptail
- Spatuloricaria evansii · Evans's Spatula Catfish
- Spatuloricaria nudiventris · Naked-belly Whiptail
- Sturisoma barbatum · Longnose Whiptail
Stingrays · 7
- Potamotrygon amandae · Amanda's river stingray
- Potamotrygon brachyura · Short-tailed river stingray
- Potamotrygon falkneri · Largespot river stingray
- Potamotrygon histrix · Porcupine river stingray
- Potamotrygon motoro · Ocellate river stingray
- Potamotrygon pantanensis · Pantanal river stingray
- Potamotrygon schuhmacheri
Tetras · 229
- Acrobrycon ipanquianus · Sapphire Tetra
- Acrobrycon ortii
- Andromakhe paris
- Andromakhe stenohalina
- Andromakhe tupi
- Aphyocharax anisitsi · Bloodfin tetra
- Aphyocharax dentatus · Piquirão
- Aphyocharax gracilis
- Aphyocharax nattereri · Natterer's Bloodfin
- Aphyocharax rathbuni · Redflank bloodfin
- Aphyocheirodon hemigrammus
- Astyanacinus moorii · Moore's Tetra
- Astyanax abramis · Bream Tetra
- Astyanax altiparanae · Yellowtail Tetra
- Astyanax aramburui
- Astyanax argyrimarginatus
- Astyanax asuncionensis
- Astyanax bagual
- Astyanax bifasciatus · Two-striped Astyanax
- Astyanax bimaculatus · Two-spot astyanax
- Astyanax biotae
- Astyanax bockmanni · Bockmann's Astyanax
- Astyanax brachypterygium
- Astyanax chico
- Astyanax clavitaeniatus
- Astyanax cordovae · Córdoba Tetra
- Astyanax dissensus
- Astyanax dissimilis
- Astyanax endy
- Astyanax eremus
- Astyanax guaricana
- Astyanax gymnogenys
- Astyanax henseli
- Astyanax hermosus
- Astyanax ita
- Astyanax jacuhiensis · Lambari do Rabo Amarelo
- Astyanax jordanensis
- Astyanax leonidas · Mojarra
- Astyanax lineatus · Lined Astyanax
- Astyanax longirhinus
- Astyanax marionae
- Astyanax minor
- Astyanax obscurus
- Astyanax ojiara
- Astyanax orbignyanus
- Astyanax pampa · Pampa Tetra
- Astyanax paranahybae
- Astyanax pirabitira
- Astyanax powelli
- Astyanax procerus
- Astyanax puka
- Astyanax pynandi
- Astyanax saguazu
- Astyanax schubarti
- Astyanax totae
- Astyanax trierythropterus · Lambarizinho-do-rabo-vermelho
- Astyanax troya
- Astyanax tumbayaensis
- Astyanax varzeae · Lambari
- Astyanax xiru
- Bario australis · Southern Moenkhausia
- Bario sanctaefilomenae · Red-eye tetra
- Brachychalcinus copei · Cope's Disc Tetra
- Brachychalcinus retrospina
- Bryconamericus agna
- Bryconamericus coeruleus
- Bryconamericus ecai
- Bryconamericus eigenmanni
- Bryconamericus exodon
- Bryconamericus grosvenori
- Bryconamericus iheringii
- Bryconamericus ikaa
- Bryconamericus indefessus
- Bryconamericus lambari · Lambari
- Bryconamericus mennii
- Bryconamericus misei
- Bryconamericus patriciae
- Bryconamericus poi · Mojarra
- Bryconamericus pyahu
- Bryconamericus rubropictus
- Bryconamericus stramineus · Pequira
- Bryconamericus sylvicola
- Bryconamericus thomasi
- Bryconamericus turiuba
- Bryconamericus uporas
- Bryconamericus ytu
- Charax leticiae
- Cheirodon ibicuhiensis
- Cheirodon interruptus · Uruguay tetra
- Cheirodon stenodon
- Coptobrycon bilineatus · Two-lined Tetra
- Creagrutus meridionalis
- Creagrutus paraguayensis
- Creagrutus varii
- Ctenobrycon kennedyi · Kennedy's Tetra
- Cynopotamus argenteus · Silver Cynopotamus
- Deuterodon langei
- Diapoma alburnus
- Diapoma alegretense
- Diapoma guarani · Guaraní Tetra
- Diapoma itaimbe
- Diapoma lepiclastum
- Diapoma nandi
- Diapoma obi
- Diapoma pyrrhopteryx · Lambari
- Diapoma speculiferum
- Diapoma terofali
- Diapoma uruguayense
- Ectrepopterus uruguayensis
- Galeocharax gulo · Wolf Tetra
- Galeocharax humeralis · Humpback Characin
- Glandulocauda caerulea
- Glandulocauda melanopleura
- Gymnocorymbus ternetzi · Black skirt tetra
- Hasemania maxillaris
- Hemigrammus durbinae
- Hemigrammus lunatus · Crescent Tetra
- Hemigrammus machadoi
- Hemigrammus mahnerti
- Hemigrammus marginatus · Bassam tetra
- Hemigrammus matei
- Hemigrammus neptunus · Neptune Tetra
- Hemigrammus parana
- Hemigrammus tridens · Trident Tetra
- Hemigrammus ulreyi · Ulrey's Tetra
- Heterocheirodon jacuiensis
- Heterocheirodon yatai
- Hollandichthys multifasciatus · Banded tetra
- Holoshesthes pequira · Pequira Tetra
- Hyphessobrycon arianae
- Hyphessobrycon auca
- Hyphessobrycon bifasciatus · Yellow Tetra
- Hyphessobrycon coelestinus
- Hyphessobrycon duragenys
- Hyphessobrycon elachys
- Hyphessobrycon herbertaxelrodi · Black Neon Tetra
- Hyphessobrycon igneus · Firefin Tetra
- Hyphessobrycon isiri
- Hyphessobrycon meridionalis
- Hyphessobrycon nicolasi
- Hyphessobrycon procerus
- Hyphessobrycon pytai
- Hyphessobrycon taurocephalus · Bull-headed Tetra
- Hyphessobrycon uaiso
- Hyphessobrycon wajat
- Hypobrycon leptorhynchus
- Hypobrycon maromba
- Jupiaba acanthogaster · Peridot Tetra
- Knodus chapadae
- Knodus geryi
- Macropsobrycon uruguayanae
- Markiana nigripinnis · Sailfin Tetra
- Megalamphodus eques · Serpae Tetra
- Megalamphodus megalopterus · Black Phantom Tetra
- Mimagoniates barberi · Croaking tetra
- Mimagoniates lateralis · Blue croaking tetra
- Mimagoniates microlepis · Croaking Tetra
- Mixobrycon ribeiroi
- Moenkhausia aurantia
- Moenkhausia bonita · Pretty Tetra
- Moenkhausia dichroura · Bandtail tetra
- Moenkhausia forestii
- Moenkhausia intermedia · Glass Tetra
- Moenkhausia lopesi
- Odontostilbe avanhandava
- Odontostilbe paraguayensis
- Odontostilbe weitzmani · Weitzman's Odontostilbe
- Oligosarcus amome
- Oligosarcus bolivianus
- Oligosarcus brevioris · Surf Toothy
- Oligosarcus hepsetus · Bocachico
- Oligosarcus itau
- Oligosarcus jacuiensis
- Oligosarcus jenynsii · Large Mouth Tetra
- Oligosarcus longirostris · Long-snouted Oligosarcus
- Oligosarcus macrolepis · Toothy Tetra
- Oligosarcus menezesi
- Oligosarcus oligolepis · Pampas Characin
- Oligosarcus paranensis · Peixe-cachorro
- Oligosarcus perdido
- Oligosarcus pintoi
- Oligosarcus platensis
- Oligosarcus robustus
- Phenacogaster jancupa
- Phenacogaster pectinata
- Phenacogaster tegatus · Six-eyed Tetra
- Piabarchus analis
- Piabina anhembi
- Piabina argentea · Silver Piabina
- Piabucus melanostoma · Black Chin Tetra
- Planaltina britskii
- Planaltina glandipedis
- Planaltina kaingang
- Planaltina myersi
- Poptella brevispina
- Poptella paraguayensis
- Prionobrama filigera · Glass bloodfin
- Prionobrama paraguayensis · Glass Bloodfin
- Psalidodon alleni
- Psalidodon anisitsi · Buenos Aires Tetra
- Psalidodon correntinus
- Psalidodon crenuchoides · Lambari
- Psalidodon eigenmanniorum
- Psalidodon erythropterus · Mojarra
- Psalidodon fasciatus · Banded astyanax
- Psalidodon gymnodontus
- Psalidodon hamatus
- Psalidodon laticeps
- Psalidodon paranae · Paraná Tetra
- Psalidodon pellegrini
- Psalidodon rutilus · Mojarra
- Psalidodon scabripinnis · Rough-finned Astyanax
- Psalidodon togoi
- Psalidodon uberaba · Uberaba Tetra
- Pseudocorynopoma doriae · Dragon fin tetra
- Pseudocorynopoma heterandria
- Pseudocorynopoma stanleyi
- Rachoviscus crassiceps · Cherryfin Tetra
- Roeboides affinis · Glass Characin
- Roeboides descalvadensis · Parana scale-eating characin
- Roeboides microlepis · Smallscale characin
- Serrapinnus calliurus · Lambari
- Serrapinnus heterodon
- Serrapinnus kriegi · Krieg's Mini Tetra
- Serrapinnus microdon · Small-toothed Characin
- Serrapinnus notomelas · Blackline Tetra
- Tetragonopterus signatus
- Thoracocharax securis · Giant hatchetfish
- Thoracocharax stellatus · Spotfin Hatchetfish
A fish appears here when its recorded range includes Paraná–La Plata & the Southern Cone; wide-ranging species also appear under other regions. Prefer to browse by the water itself? Explore the waters →
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