Ptychocharax rhyacophila Weitzman, Fink, Machado-Allison & Royero L., 1994

Family:  Characidae (Characins; tetras), subfamily: Stevardiinae
Max. size:  6.24 cm SL (male/unsexed)
Environment:  pelagic; freshwater
Distribution:  South America: Upper Siapa River in Casiquiare River drainage in Venezuela.
Diagnosis:   
Biology:  Inhabits clear streams with sand and granitic rocks bottoms covered by dense mats of the plant Apinaga multibranchiata (Podostemaceae) in areas of fast water. Feeds on larvae of aquatic insects such as simuliids and trichopterans that were found among the podostemacean plants. A few ants and spiders were also found in the stomachs.
IUCN Red List Status: Least Concern (LC); Date assessed: 03 October 2020 Ref. (130435)
Threat to humans:  harmless


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