Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopterygii (ray-finned fishes) > Siluriformes
(Catfish) > Olyridae
Etymology: Olyra: Greek, olyra = a kind of grain (Ref. 45335).
After Bockmann & de Pinna (2004: Ref. 55745), possibly a synonym of Olyra longicaudata McClelland, 1842. The validity of species remains to be demonstrated.
Environment / Climate / Range
Freshwater; demersal. Tropical
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 5.8 cm SL male/unsexed; (Ref. 55745)
Morphology | Morphometrics
Distinguished by having the following characters: posterior nares with nasal barbels (shared with various Old-World catfish taxa); anus and urogenital openings widely separated (shared with a large subgroup of Bagridae); first lateral line ossicle with well-defined processes articulating with supracleithrum (shared with species of Olyra) (Ref. 55745).
Formerly wrongly attributed to the South-American fauna. This species clearly belongs to South Asia. It is possible that accidental mixing of specimens and or labels resulted in the assignment of this species to a Neotropical location (Ref. 55745).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Bockmann, F.A. and M.C.C. de Pinna, 2004. Heptapterus collettii Steindachner, 1881: a member of the Asian bagrid genus Olyra erroneously assigned to the Neotropical fauna (Siluriformes: Ostariophysi). Copeia 2004(3):665-675. (Ref. 55745)
IUCN Red List Status (Ref. 96402)
CITES (Ref. 94142)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.5312 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), based on all LWR estimates (Ref. 93245
Trophic Level (Ref. 69278
): 3.2 ±0.4 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278
): High, minimum population doubling time less than 15 months ().
Vulnerability (Ref. 59153
): Low vulnerability (10 of 100) .