Hypsolebias flammeus (Costa, 1989)
photo by Vermeulen, F.

Family:  Rivulidae (Rivulines), subfamily: Cynolebiinae
Max. size:  6 cm TL (male/unsexed)
Environment:  benthopelagic; freshwater, non-migratory
Distribution:  South America: Tocantins River basin, Brazil.
Diagnosis:  Dorsal soft rays (total): 15-23; Anal soft rays: 18-24; Vertebrae: 26-28. Female with anal fin long, spatulated, and long posterior process of occipital, terminating in narrow posterior extension; flanks with iridescent blue bars. Male with dorsolateral regions of head red, with blue spots on center of scales; bars on anal and caudal fins; with filamentous rays along the entire distal border of dorsal and anal fins. Dorsal-fin rays 20-23 in male (no dark zones), 15-18 in female; anal-fin rays 20-24 in male, 18-22 in female; caudal-fin rays 24-25, caudal fin subtruncate in male, rounded in female (Ref. 49550).
Biology:  Bottom spawner, 4 months. Is difficult to maintain in aquarium (Ref. 27139).
IUCN Red List Status: Endangered (EN); Date assessed: 07 November 2018 (B2ab(ii,iii,iv)) Ref. (130435)
Threat to humans:  harmless


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