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Siluriformes (Catfishes) >
Heptapteridae (Three-barbeled catfishes)
Etymology: Chasmocranus: Greek, chanos, -eos, ous, and chasma, -atos = abyss, mouth opened, inmensity + Greek, kranion = skull (Ref. 45335).
More on author: Eigenmann.
Environment: milieu / climate zone / depth range / distribution range
Sinh thái học
; Nước ngọt gần đáy. Tropical
South America: Mana and Marowijne/Maroni river basins, and Potaro River.
Bộ gần gũi / Khối lượng (Trọng lượng) / Age
Maturity: Lm ? range ? - ? cm
Max length : 7.9 cm SL con đực/không giới tính; (Ref. 35381)
Rather rare (7 to 8 specimens known) maybe due to the very specialized biotope in which Heptapterus longior might be present. It is therefore poorly identified, also considering that the original description, rather poor, identifies it only in comparison with H. longior starting from the size of the adipose fin and the more pointed caudal fin (Ref. 35381).
Life cycle and mating behavior
Maturities | Sự tái sinh sản | Spawnings | Egg(s) | Fecundities | Ấu trùng
Bockmann, F.A. and G.M. Guazzelli, 2003. Heptapteridae (Heptapterids). p. 406-431. In R.E. Reis, S.O. Kullander and C.J. Ferraris, Jr. (eds.) Checklist of the Freshwater Fishes of South and Central America. Porto Alegre: EDIPUCRS, Brasil. (Ref. 36914)
IUCN Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5010 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00776 (0.00362 - 0.01664), b=2.98 (2.80 - 3.16), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Mức dinh dưỡng (Ref.
69278): 3.4 ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
