Teleostei (teleosts) >
Siluriformes (Catfishes) >
Loricariidae (Armored catfishes) > Hypostominae
Etymology: Hypostomus: Greek, hypo = under + Greek, stoma = mouth (Ref. 45335).
Eponymy: Dr Orville Adalbert Derby (1851–1915) was an American geologist. [...] (Ref. 128868), visit book page.
Issue
Specimens collected in Paraguay (middle Paraguayan Parana basin) identified as Hypostomus derbyi based on morphology (Weber et al. 1992:13) and description of teeth in Muller and Weber (1992:750, fig. 2f).
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; demersal. Tropical
South America: Iguaçu River and arroyo Uruga-í Creek basins, Paraguayan tributaries of the Paraná River.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 31.0 cm SL male/unsexed; (Ref. 111771); max. published weight: 911.30 g (Ref. 111771)
Facultative air-breathing in the genus (Ref. 126274)
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Burgess, W.E., 1989. An atlas of freshwater and marine catfishes. A preliminary survey of the Siluriformes. T.F.H. Publications, Inc., Neptune City, New Jersey (USA). 784 p. (Ref. 6868)
IUCN Red List Status (Ref. 130435: Version 2025-2)
Threat to humans
Harmless
Human uses
Fisheries: of no interest
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