Hemibrycon Microformaa (Hemibrycon microformaa) is a ray-finned fish of the family Stevardiidae. It inhabits freshwater waters. This species can reach a maximum total length of 3.1 cm. With a trophic level of 3, it is a low-level carnivore, feeding on invertebrates and small organisms. It is assessed as Data Deficient on the IUCN Red List.
Dorsal soft rays (total): 9 - 10; Anal soft rays: 17 - 19; Vertebrae: 33 - 34. Differs from all other species of the genus by the following characters: small size (less than 3.1 cm SL vs. larger than 3.5 cm SL), presence of dark lateral band (vs. absent); flat dorsal edge of the orbit and flat ventral edge of the upper (vs. convex); unequal jaws with the superior jaw longer than the inferior (vs. jaws equal); and mouth subterminal (vs. terminal). Can also be differentiated by its long pelvic fins, reaching the anal-fin origin (vs. short and ends not reaching anal-fin origin), 33-34 vertebrae (vs. 37-43) and 14-16 branched anal fin rays (vs. 21-28). : elongated.
Behavioural data for Hemibrycon Microformaa is currently being reviewed.
Freshwater; benthopelagic. Tropical South America: Atrato river basin in Colombia.
The following diseases are known to affect Hemibrycon Microformaa.
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