Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

Teleostei (teleosts) > Gymnotiformes (Knifefishes) > Hypopomidae (Bluntnose knifefishes)
Etymology: Hypopygus: Greek, hypo = under + Greek, pyge = tail (Ref. 45335); isbruckeri: The specific epithet, isbruckeri, is a patronym in honour of I. J. H. Isbrücker for his contributions to Neotropical ichthyology, including Hypopygus (Nijssen & Isbrücker, 1972) (Ref. 88778).
Eponymy: Dr Isaäc J H Isbrücker (d: 1944) is a Dutch ichthyologist who is an expert on the taxonomy of South American armoured catfishes (Callichthyidae, Loricariidae). [...] (Ref. 128868), visit book page.

Environment: milieu / climate zone / depth range / distribution range Ecology

Freshwater; benthopelagic. Tropical

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

South America: Hypopygus isbruckeri is known only from the vicinity of San Fernando de Atabapo, Amazonas, Venezuela (Ref. 88778).

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 9.0 cm TL male/unsexed; (Ref. 88778)

Short description Identification keys | Morphology | Morphometrics

Hypopygus isbruckeri is diagnosed from congeners by the following combination of characters: the total number of anal-fin rays (136–156 versus 102–135 in H. hoedemani, H. lepturus, and H. minissimus), the presence of the sixth infraorbital bone (versus absence in H. hoedemani, H. lepturus, and H. minissimus), the presence of oblique bands (versus absence in H. minissimus), the presence of scales at midbody (versus absence in H. minissimus), the total number of pectoral fin rays (12–16 versus 10–12 in H. nijsseni), the number of scales above the lateral line (seven to eight versus five to six in H. nijsseni, and three to five in H. neblinae), the head length (13.2–22.9% of LEA versus 12.6–13.9 in H. ortegai), and the dorsal rami of intermittent branch of anterior lateral line nerve visible as two black parallel lines (versus not visible in H. ortegai) (Ref. 88778).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Main reference Upload your references | References | Coordinator : Albert, James S. | Collaborators

de Santana, C.D. and W.G.R. Crampton, 2011. Phylogenetic interrelationships, taxonomy, and reductive evolution in the Neotropical electric fish genus Hypopygus (Teleostei, Ostariophysi, Gymnotiformes). Zool. J. Linn. Soc. 163:1096-1156. (Ref. 88778)

IUCN Red List Status (Ref. 130435: Version 2024-2)

Data deficient (DD) ; Date assessed: 01 September 2020

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

FAO -

Hypopygus isbruckeri de Santana & Crampton, 2011