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Actinopterygii (ray-finned fishes) > Siluriformes (Catfish) > Schilbeidae (Schilbid catfishes)
Etymology: Irvineia: It is the name of a seaweed. More on author: Trewavas.

Environment / Climate / Range Ecology

Freshwater; demersal. Tropical, preferred ?; 6°N - 5°N

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

Africa: endemic to the lower Volta (Ref. 57127) in Ghana.

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 19.0 cm SL male/unsexed; (Ref. 57127)

Short description Morphology | Morphometrics

Dorsal spines (total): 1; Dorsal soft rays (total): 6; Anal soft rays: 58 - 68. Diangosis: pectoral-fin spines strongly denticulate; 58-68 branched anal-fin rays; 16-18 gill rakers on lower limb of first gill arch; barbels very short, nasal barbell extending beyond hind margin of eye; adipose fin always present; palatine teeth present; swim bladder extending backwards through a caecal appendix to above end of anal-fin base (Ref. 57127). Coloration: no observations on colour pattern in life (Ref. 57127). Preserved specimens: sides and belly pale and silvery, back and head darker; dorsal and caudal fins, as well as pectorals, lightly spotted; anal fin and pelvics unpigmented (Ref. 57127).

Oviparous, eggs are unguarded (Ref. 205).

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

Distinct pairing (Ref. 205).

Main reference Upload your references | References | Coordinator | Collaborators

De Vos, L., 2003. Schilbeidae. p. 97-116 In C. Lévêque, D. Paugy and G.G. Teugels (eds.) Faune des poissons d'eaux douce et saumâtres de l'Afrique de l'Ouest, Tome 2. Coll. Faune et Flore tropicales 40. Musée Royal de l'Afrique Centrale, Tervuren, Belgique, Museum National d'Histoire Naturalle, Paris, France and Institut de Recherche pour le Développement, Paris, France. 815 p. (Ref. 57127)

IUCN Red List Status (Ref. 109396)

Endangered (EN) (B1ab(ii,iii)+2ab(ii,iii))

CITES (Ref. 94142)

Not Evaluated

Threat to humans

Harmless

Human uses

Fisheries:

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More information

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Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805): PD₅₀ = 0.7500 [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 for this body shape (Ref. 93245).

Trophic Level (Ref. 69278): 3.4 ±0.4 se; Based on size and trophs of closest relatives

Resilience (Ref. 69278): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).

Vulnerability (Ref. 59153): Low to moderate vulnerability (32 of 100) .

Price category (Ref. 80766): Unknown.

Irvineia voltae Trewavas, 1943