''Caecieleotris morrisi'', also known as the Oaxaca cave sleeper is a species of troglobitic fish in the family

Eleotridae Eleotridae is a family of fish commonly known as sleeper gobies, with about 34 genera and 180 species. Most species are found in the tropical Indo-Pacific region, but there are also species in subtropical and temperate regions, warmer parts of th ...

found in a single cave system beneath Presa Miguel Alemán reservoir, northern State of Oaxaca in Mexico. This species is the only member of its genus. It is only known from museum specimens that were collected in the 1990s. Since then the cave system has been flooded because of a dam. Recent surveys have not been able to relocate the species and it might be

extinct Extinction is the termination of a kind of organism or of a group of kinds (taxon), usually a species. The moment of extinction is generally considered to be the death of the last individual of the species, although the capacity to breed and ...

. The generic name is a compound of the Latin ''caecus'' meaning blind suffixed with '' Eleotris'', the type genus of the Eleotridae and

specific name Specific name may refer to: * in Database management systems, a system-assigned name that is unique within a particular database In taxonomy, either of these two meanings, each with its own set of rules: * Specific name (botany), the two-part (bino ...

honours the

cave diver Cave-diving is underwater diving in water-filled caves. It may be done as an extreme sport, a way of exploring flooded caves for scientific investigation, or for the search for and recovery of divers or, as in the 2018 Thai cave rescue, other ...

, speleologist and conservationist Thomas L. Morris who discovered this species and collected the type specimen.

References

Cave fish Eleotridae Fish described in 2016 Taxa named by Prosanta Chakrabarty {{Eleotridae-stub