Hypoptopoma muzuspi Aquino & Schaefer, 2010

Family:  Loricariidae (Armored catfishes), subfamily: Hypoptopomatinae
Max. size:  3.63 cm (male/unsexed)
Environment:  benthopelagic; freshwater
Distribution:  South America: Rio Tocantins basin; known only from Rio Agua Fria, in the drainage of Rio Araguaia (main tributary of Rio Tocantins).
Diagnosis:  Vertebrae: 27-27. This species is distinguished from its congeners having the bifid neural spines of vertebra 10-12 expanded distally (vs. bifid neural spines progressively pointed distally); it is further distinguished from all congeners, except H. brevirostratum, by having its preopercle constricted medially (vs. preopercle without constriction) and presence of canal in preopercle, it is semicircular, and located posterior to the preopercle constriction (Ref. 84367).
Biology: 
IUCN Red List Status: Least Concern (LC); Date assessed: 07 November 2018 Ref. (130435)
Threat to humans:  harmless


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