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Siluriformes (Catfishes) >
Cetopsidae (Whale catfishes) > Helogeninae
Etymology: Helogenes: Greek, helo = marsh + Greek, gene, genes = birth, race. (Helo has the "e" short) (Ref. 45335).
More on author: Günther.
Environment: milieu / climate zone / depth range / distribution range
Écologie
; eau douce démersal; pH range: 6.0 - 7.0; dH range: ? - 15. Tropical; 22°C - 26°C (Ref. 2059)
South America: Atlantic drainages of Guyana, Suriname, and French Guiana, upper Río Orinoco and Río Negro systems in Venezuela, and Amazon Basin in Brazil, Peru, and Ecuador.
Taille / Poids / Âge
Maturity: Lm ? range ? - ? cm
Max length : 7.9 cm SL mâle / non sexé; (Ref. 101566)
A typical inhabitant of black or clear waters, usually in forest streams with moderate to swift current flow over firm sand or gravel bottoms (Ref. 7462). Lives hidden under plants, litter or plant debris. Can easily be mistaken as a piece of dead wood when it rests on its side, motionless on the bottom. Often swims on one side in undulating movements (Ref. 35381). Feeds mainly on terrestrial insects, particularly ants (Ref. 7462). Nocturnal (Ref. 6868).
Life cycle and mating behavior
Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larves
Vari, R.P. and H. Ortega, 1986. The catfishes of the neotropical Family Helogenidae (Ostariophysi: Siluroidei). Smith. Contrib. Zool. (442):20 p. (Ref. 7462)
Statut dans la liste rouge de l'IUCN (Ref. 130435)
Menace pour l'homme
Harmless
Utilisations par l'homme
Pêcheries: sans intérêt
Outils
Articles particuliers
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Sources Internet
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5625 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00513 (0.00202 - 0.01305), b=3.14 (2.92 - 3.36), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Niveau trophique (Ref.
69278): 3.5 ±0.50 se; based on food items.
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
