Cynolebias akroa Nielsen, Martins, Araujo, Lira & Faour, 2018

Family:  Rivulidae (Rivulines), subfamily: Cynolebiinae
Max. size:  7.5 cm SL (male/unsexed); 6.13 cm SL (female)
Environment:  benthopelagic; freshwater
Distribution:  South America: Brazil.
Diagnosis:  This species can be easily distinguished from its congeners by the following characters: presence of metallic golden-green, with 11-13 large light dark vertical bars in the flank; caudal fin translucent and has no dots; fewer number of pelvic fin rays; dorsal-fin origin through base of 8th or 9th anal fin ray; higher number of anterior rostral cephalic neuromasts; and, cylindrical and elongated urogenital papilla in males (Ref. 127992).
Biology:  Known only from the type locality, in temporary pools of about 1.3 m deep. Commonly found co-existing with other annual fish species of the genus Hypsolebias. Maximum length based on type specimen, to be replaced with a better reference (Ref. 127992).
IUCN Red List Status: Critically Endangered (CR); Date assessed: 29 December 2020 (B1ab(v)+2ab(v)) Ref. (130435)
Threat to humans:  harmless


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