Classification / Names
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Teleostei (teleosts) >
Siluriformes (Catfishes) >
Bagridae (Bagrid catfishes)
Etymology: Olyra: Greek, olyra = a kind of grain (Ref. 45335).
Eponymy: Dr Robert Collett (1842–1913) was a Norwegian zoologist and ichthyologist. [...] (Ref. 128868), visit book page.
More on author: Steindachner.
Issue
After Bockmann & de Pinna (2004: Ref. 55745), possibly a synonym of Olyra longicaudata McClelland, 1842. The validity of species remains to be demonstrated.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; demersal. Tropical
Asia.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 5.8 cm SL male/unsexed; (Ref. 55745)
Short description
Identification keys | 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. 130435: Version 2024-2)
Threat to humans
Harmless
Human uses
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Internet sources
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5156 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01023 (0.00402 - 0.02604), b=2.95 (2.72 - 3.18), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.2 ±0.1 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).