Hypoptopoma brevirostratum Aquino & Schaefer, 2010

Family:  Loricariidae (Armored catfishes), subfamily: Hypoptopomatinae
Max. size:  5.06 cm TL (male/unsexed)
Environment:  benthopelagic; freshwater
Distribution:  South America: tributaries of Río Amazonas between confluence of Ucayali-Marañon rivers and Manaus.
Diagnosis:  Vertebrae: 27-27. This species is distinguished from all congeners except H. muzuspi by having preopercle constricted medially (vs. no constriction); canal in preopercle present, semicircular, located posterior to the preopercle constriction (vs. canal absent from preopercle). It differs from H. muzuspi by its wider body, cleithral width 23.7-27.0 (25.7) (vs. 19.1-23.5 (22.2)), a deeper caudal peduncle, caudal-peduncle depth 6.4-9.1 (7.7) (vs. 5.2-6.7 (5.8)), and a larger eye, horizontal eye diameter 19.8-23.3 (21.7) (vs. 13.6-20.7 (18.4)) (Ref. 84367).
Biology: 
IUCN Red List Status: Least Concern (LC); Date assessed: 09 October 2020 Ref. (130435)
Threat to humans:  harmless


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