Taxonomy & naming
Pseudogobius youtabae was described in 2026 by Marcelo Kovačić, Hamid Reza Esmaeili, Golnaz Sayyadzadeh and Vahid Shoaleh, in a paper devoted to a new species of Pseudogobius from Qeshm Island, published in the journal Spixiana (München), volume 48, issue 2, pages 195–213; the species description itself falls on page 202, with figures 3 through 8. The paper's own title places the new species in 'Gobiidae: Tridentigerinae', while the Catalog of Fishes (Eschmeyer, CAS) — the standing authority for valid names followed on this site — currently classifies it in family Oxudercidae, subfamily Gobionellinae. Both placements come directly from the two primary sources consulted for this article and are reported here without attempting to adjudicate between competing classification schemes for the tridentiger-goby group, an area of ongoing revision in goby systematics generally.
The holotype (PMR VP5875) and paratypes (held at PMR and ZM-CBSU) were collected from the coast of Qeshm Island, Persian Gulf, Hormuzgan Province, Iran, at coordinates 26°41'24.2"N, 55°28'37.9"E. The genus name Pseudogobius combines the Greek prefix pseudo- ('false') with Gobius, the type genus of true gobies — a standard construction in ichthyological nomenclature for a genus considered similar to, but distinct from, Gobius.
The full type description, including the diagnostic morphological characters separating P. youtabae from its congeners, is behind the journal's access restrictions; this article was not able to consult it directly, and reports only what the Catalog of Fishes record and the paper's bibliographic metadata state.
Morphology
No size, meristic counts, or colour description specific to Pseudogobius youtabae were accessible in the sources consulted for this article; the original description (Spixiana 48(2): 195–213, with the species account and figures 3–8 on page 202) could not be retrieved in full. At the genus level, Pseudogobius species are small, slender-bodied gobies — typically only a few centimetres in standard length — with the fused pelvic sucker disc characteristic of the true gobies, a feature shared across Oxudercidae/Gobiidae. This is stated as a genus-level generality only; no morphological measurement specific to P. youtabae is asserted here.
Habitat
Pseudogobius youtabae is recorded only from the coast of Qeshm Island in the Persian Gulf, Hormuzgan Province, Iran, per the Catalog of Fishes distribution record, which lists the species' habitat as marine — a coastal, saltwater setting rather than the brackish estuaries, mangroves and tidal mudflats that many other Pseudogobius species occupy across the Indo-West Pacific. That contrast is noted here as a documented fact from the Catalog of Fishes record, not an assumption: whatever the habits of its congeners, P. youtabae itself is currently classified as a marine species.
No further habitat detail — depth, substrate, or specific reef or shoreline type — is available in the sources accessible for this article.
Feeding
No feeding data specific to Pseudogobius youtabae has been published in the sources accessible here. Species in the genus Pseudogobius generally are small benthic gobies that feed on tiny invertebrates and organic matter picked from sand, mud or rock surfaces — a genus-level generality drawn from better-studied congeners such as the Australian and Southeast Asian Pseudogobius species, not a documented observation for P. youtabae specifically.
Mating
No mating behaviour has been documented for Pseudogobius youtabae. Small demersal gobies in this genus and family typically pair or form loose territorial groups over sand, mud or rock substrate, with males defending a nest site, but this is offered only as a genus-level generality; nothing species-specific has been published for P. youtabae.
Breeding
No breeding record exists for Pseudogobius youtabae. Gobies in related genera typically lay adhesive eggs on a hard surface or within a burrow or crevice, guarded by the male until hatching, but whether this applies to P. youtabae — and whether its life history includes any amphidromous or marine-larval phase, as in many Oxudercidae — is not documented in the sources accessible for this article. There is no captive-breeding record for a species described in 2026 from wild-collected type material.
In the aquarium
Pseudogobius youtabae has no history in the aquarium trade; it was described in 2026 from specimens collected for taxonomic study on Qeshm Island, and there is no record of it having been exported or offered for sale. A small number of congeners in the genus Pseudogobius — most notably the Australian Pseudogobius olorum — are occasionally kept by specialist brackish and native-fish hobbyists, generally in small tanks with a mud or sand substrate and moderate to full marine salinity, but this is a genus-level extrapolation from a different species and region, not documentation of any husbandry for P. youtabae itself.
Conservation
Pseudogobius youtabae has not been evaluated by the IUCN Red List, having been described in 2026. No population size, trend, or threat information specific to the species is available. It is currently known only from the coast of Qeshm Island in the Persian Gulf; coastal development, shipping, and industrial activity around the Strait of Hormuz region are general pressures on Persian Gulf nearshore habitats, but no source available here ties any specific threat to this species or its population status.