Cynolebias griseus Costa, Lacerda & Brasil, 1990
photo by Vermeulen, F.

 Family:  Rivulidae (Rivulines)
 Max. size:  8.34 cm SL (male/unsexed); 5.52 cm SL (female)
 Environment:  benthopelagic, non-migratory
 Distribution:  South America: Upper Tocantins River basin in Brazil.
 Diagnosis:  Dorsal soft rays (total): 17-22; Anal soft rays: 19-23. Wide basihyal in both sexes. Females with 1-2 black precaudal blotches. Supraorbital neuromasts 21-22. Dorsal-fin rays 20-22 in males, 17-19 in females; anal-fin rays 21-23 in males, 19-21 in females; caudal-fin rays 33-34. Caudal and pectoral fins rounded. Filamentous rays on anal fin of male lacking. Contact organs on scales of body and head of male present. Snout gently pointed with lower jaw slightly elongated (Ref. 40938).
 Biology:  Bottom spawner, 4 months. Is very difficult to maintain in aquarium (Ref. 27139).
 IUCN Red List Status: Not Evaluated  (Ref. 96402)
 Threat to humans:  harmless
 Country info:   

 Entered by: Bailly, Nicolas - 09.09.98
 Modified by: Torres, Armi G. - 27.10.15

Source and more info: For personal, classroom, and other internal use only. Not for publication.

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