Rhadinoloricaria macromystax (Günther, 1869)
photo by Sabaj Pérez, M.H.

Family:  Loricariidae (Armored catfishes), subfamily: Loricariinae
Max. size:  14.2 cm SL (male/unsexed)
Environment:  demersal; freshwater
Distribution:  South America: Peru and Ecuador.
Diagnosis:  This species is distinguished from R. stewari by the following characters: snout shape is wider and more projected with snout length 14.6-15.1% SL (vs. 11.3-13.3% SL); with shorter caudal peduncle, its postanal length 45.2-46.1% SL (vs. 48.9-50.8% SL); the dorsal-fin is closer to caudal-fin, its postdorsal length 54.3% SL (vs. 57.5-59.0% SL); abdomen totally covered with plates, loosely connected in examined specimen (vs. abdomen partially or totally covered with plate) (Ref. 124527).
Biology: 
IUCN Red List Status: Data deficient (DD); Date assessed: 24 April 2014 Ref. (130435)
Threat to humans:  harmless


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