Cynolebias Ochraceus (Cynolebias ochraceus) is a ray-finned fish of the family Rivulidae. It inhabits freshwater waters. This species can reach a maximum total length of 5.7 cm. With a trophic level of 3.2, it is a low-level carnivore, feeding on invertebrates and small organisms. It is assessed as Critically Endangered on the IUCN Red List.
Dorsal soft rays (total): 14 - 18; Anal soft rays: 17 - 20; Vertebrae: 33 - 34. Cynolebias ochraceus can be diagnosed from C. gilbertoi, the only other member of the C. gilbertoi group, by having 33 vertebrae (vs. 31-32), flank light yellow ochre and anal fin orange-yellow ochre in males (vs. flank pale pinkish brown or light brown, anal fin pink or pinkish grey), and tip of anal-fin filaments reaching basal portion of caudal fin in males (vs. reaching posterior half of caudal fin). It can be further distinguished from C. gilbertoi by having 29-31 caudal-fin rays (vs. 26-29) and 9-12 vomerine teeth (vs.11-16), body depth 35.0-37.8% SL in males (vs. 32.5-35.4% SL), and larger maximum adult size (5.7 cm SL vs. 3.7 cm SL) .: fusiform / normal.
Behavioural data for Cynolebias Ochraceus is currently being reviewed.
Diet information for Cynolebias Ochraceus is currently being compiled.
Reproduction data for Cynolebias Ochraceus is currently being compiled.
Freshwater; benthopelagic. Tropical South America: middle São Franciso basin in Brazil.
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