Rivulus flammaecauda Vermeulen & Mejia-Vargas, 2020

Family:  Rivulidae (Rivulines), subfamily: Rivulinae
Max. size:  3.55 cm SL (male/unsexed)
Environment:  benthopelagic; freshwater
Distribution:  South America: Colombia and possibly Brazin and Venezuela.
Diagnosis:  This species is distinguished by the following characters: short pelvic fins, not reaching insertion of anal-fin base; truncate caudal fin in males; with few scales in the longitudinal series, 37-38 (Ref. 130065).
Biology:  The type locality, a black water creek was located in primary forest under a thick canopy and where water depth was only a few cms, likely due to the flat terrain. The creek is divided into several smaller streams and covered a wide stretch of the forest floor. Rivulus flammaecauda was more abundant in deeper, open areas (Ref. 130065).
IUCN Red List Status: Not Evaluated (N.E.) Ref. (130435)
Threat to humans:  harmless


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