Hypostomus gymnorhynchus (Norman, 1926)
Hypostomus gymnorhynchus
photo by Sabaj PĂ©rez, M.H.

Family:  Loricariidae (Armored catfishes), subfamily: Hypostominae
Max. size:  26.6 cm SL (male/unsexed); max.weight: 253.0 g
Environment:  demersal; freshwater
Distribution:  South America: Guianas.
Diagnosis:   
Biology:  Rarely attains a length of 20 cm (Ref. 27188). Rheophilic species occurring in very sunny rapids with strong current and rocky bottom (Ref. 35381); inhabiting largest part of freshwaters, from headwaters to upstream of the lower falls, with rocky substrate consisting of boulders, stones, gravels, and sand; the exposed wet rocks are also often covered by the Podostemaceae Mourera fluviatilis and Apinagia richardiana (Ref. 90186).
IUCN Red List Status: Least Concern (LC); Date assessed: 14 January 2021 Ref. (130435)
Threat to humans:  harmless


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