Melanorivulus Ubirajarai (Melanorivulus ubirajarai) is a ray-finned fish of the family Rivulidae. It inhabits freshwater waters in pelagic environments. This species can reach a maximum total length of 3 cm. With a trophic level of 3.1, it is a low-level carnivore, feeding on invertebrates and small organisms. It is assessed as Vulnerable on the IUCN Red List.
Differs from all other species of the genus, except M. litteratus, by the presence of a short dark yellowish grey stripe on the caudal fin in females, connecting black caudal spot on the middle of the fin (vs. never a horizontal mark in this position) .: elongated.
Behavioural data for Melanorivulus Ubirajarai is currently being reviewed.
Freshwater; pelagic. Tropical; 17°S - 18°S, 52°W - 53°W South America: Brazil, Estado de Goias, Municipo de Mineiros.
The following diseases are known to affect Melanorivulus Ubirajarai.
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