Hypsolebias Hamadryades (Hypsolebias hamadryades) is a ray-finned fish of the family Rivulidae. It inhabits freshwater waters. This species can reach a maximum total length of 2.7 cm. With a trophic level of 3.1, it is a low-level carnivore, feeding on invertebrates and small organisms. It is assessed as Critically Endangered on the IUCN Red List.
This species can be distinguised from its congeners by the following set of characters: males lack the dark greenish grey bars on the anterior portion of the flank; males have transverse blue stripes on the unpaired fin wider than interspace. The body coloration of males can also be distinguished by a combination of the following characters: presence of transverse blue stripes in dorsal fin and one basal row of blue spots; most of the anal fins have transverse blue stripes; presence of blue bars on most portion of caudal fin; 8-10 light red bars between humeral region and the anterior part of the caudal peduncle; dorsal-fin origin anterior to anal-fin origin in males; and having 23 or 24 caudal-fin rays .Cross section: oval.
Behavioural data for Hypsolebias Hamadryades is currently being reviewed.
Diet information for Hypsolebias Hamadryades is currently being compiled.
Reproduction data for Hypsolebias Hamadryades is currently being compiled.
Freshwater; benthopelagic. Tropical South America: Brazil.
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