Fundulopanchax is a genus of killifish in the family Nothobranchiidae, native to rainforest and savanna streams and pools of West and Central Africa — the atlas's records span Cameroon, Nigeria, Equatorial Guinea, Ghana, Benin, Cote d'Ivoire, and Togo. Like other African killifish, species are small, strikingly patterned, and strongly sexually dimorphic, with males carrying bold red, blue, or iridescent spotting and patterning that females lack. The atlas covers 22 species from about 2–5 in as adults; some occupy permanent water bodies while others live in seasonal pools that dry up between rains, a distinction that shapes how each species reproduces.
Fundulopanchax includes some of the most popular killifish in the aquarium hobby — Fundulopanchax gardneri, the Blue lyretail, is widely considered one of the best beginner killifish for its color, hardiness, and manageable size, while the Blue gularis, a common name shared by both Fundulopanchax gularis and Fundulopanchax sjostedti in the atlas, is a larger, more striking species for more experienced keepers. Species from seasonal pools are typically egg-layers whose eggs can withstand a dry incubation period between wet seasons, a trait killifish breeders deliberately reproduce at home. Conservation status across the genus is uneven: West African forest-stream habitat loss has left a substantial share of species Endangered, Data Deficient, or worse, and the atlas flags two species for CARES conservation priority.