Inhabits creeks with brown water and substrate of stone and sand. The creeks are characterized by having 18.3-20.3°C surface temperature, 7.6-9.7 mg/l dissolved oxygen and 104-127% saturation, pH 8, and 2-4 m width .
Dorsal soft rays (total): 10; Vertebrae: 39 - 40. Diagnosed from other members of the genus in possessing nine proximal pterygiophores (including the terminal piece) on dorsal fin. Differs further from Hemibrycon species from the upper and middle Cauca rivers by having 43-46 pored lateral-line scales . : elongated.
Behavioural data for Hemibrycon Cairoensis is currently being reviewed.
Diet information for Hemibrycon Cairoensis is currently being compiled.
Reproduction data for Hemibrycon Cairoensis is currently being compiled.
Freshwater; benthopelagic; pH range: 8.0 - 8.0. Tropical; ? - 20°C South America: Los Ramirez and Italica Creeks in the Risaralda River system, upper Cauca, Colombia.
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