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Irvineia voltae Trewavas, 1943

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Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

Teleostei (teleosts) > Siluriformes (Catfishes) > Schilbeidae (Schilbid catfishes)
Etymology: Irvineia: It is the name of a seaweed;  voltae: Referring to the type locality of this species, the Volta River (Ref. 43912).
More on author: Trewavas.

Environment: milieu / climate zone / depth range / distribution range Ecology

Freshwater; demersal. Tropical; 6°N - 5°N

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

Africa: endemic to the lower Volta in Ghana (Ref. 43912, 57127).

Size / Weight / Age

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

Short description Identification keys | Morphology | Morphometrics

Dorsal spines (total): 1; Dorsal soft rays (total): 6; Anal soft rays: 58 - 68. Diagnosis: posterior (=inner) side of 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 barbel extending to hind margin of eye; adipose fin always present; swim bladder extending backwards through a caecal appendix to above end of anal-fin base (Ref. 43912, 57127). Palatine teeth present (Ref. 57127). Posterior nostrils closer to each other than are anterior ones; 7-9 branched pelvic fin rays (Ref. 43912).

Biology     Glossary (e.g. epibenthic)

Probably carnivorous, feeding at least partly on small crustaceans (Ref. 43912). Oviparous, eggs are unguarded (Ref. 205).

Life cycle and mating behavior Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | 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. 130435)

  Endangered (EN) (B1ab(iii)); Date assessed: 30 November 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

FAO - Publication: search | FishSource |

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Internet sources

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: genus, species | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: genome, nucleotide | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | Tree of Life | Wikipedia: Go, Search | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates based on models

Phylogenetic diversity index (Ref. 82804):  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), in cm total length, based on all LWR estimates for this body shape (Ref. 93245).
Trophic level (Ref. 69278):  3.3   ±0.5 se; based on size and trophs of closest relatives
Resilience (Ref. 120179):  Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (13 of 100).