''Gogo atratus'' is a species of

catfish Catfish (or catfishes; order Siluriformes or Nematognathi) are a diverse group of ray-finned fish. Named for their prominent barbels, which resemble a cat's whiskers, catfish range in size and behavior from the three largest species alive, ...

of the family Anchariidae

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsew ...

Madagascar Madagascar (; mg, Madagasikara, ), officially the Republic of Madagascar ( mg, Repoblikan'i Madagasikara, links=no, ; french: République de Madagascar), is an island country in the Indian Ocean, approximately off the coast of East Africa ...

where it is found in the

Mananara du Nord River Mananara may refer to: * Mananara Avaratra (Mananara Nord), a city in the region of Analanjirofo, Madagascar * Mananara River (Analanjirofo), a river in the region of Analanjirofo, Madagascar * Mananara River, a river in the region of Atsimo-Atsin ...

drainage in northeastern Madagascar. It grows to a length of 17.1 cm. ''G. atratus'' is strictly

nocturnal Nocturnality is an animal behavior characterized by being active during the night and sleeping during the day. The common adjective is "nocturnal", versus diurnal meaning the opposite. Nocturnal creatures generally have highly developed sens ...

. It reproduces at the end of the dry season and at the onset of the rainy season. The size of the eggs suggests that this species exhibits parental care, though this is unproven. ''G. atratus'' feed on aquatic

insect Insects (from Latin ') are pancrustacean hexapod invertebrates of the class Insecta. They are the largest group within the arthropod phylum. Insects have a chitinous exoskeleton, a three-part body ( head, thorax and abdomen), three pairs ...

s and small freshwater

shrimp Shrimp are crustaceans (a form of shellfish) with elongated bodies and a primarily swimming mode of locomotion – most commonly Caridea and Dendrobranchiata of the decapod order, although some crustaceans outside of this order are refer ...

References

* Anchariidae Taxa named by Heok Hee Ng Taxa named by John Stephen Sparks Taxa named by Paul V. Loiselle Fish described in 2008 {{siluriformes-stub