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Odaxothrissa ansorgii  Boulenger, 1910

Ansorge fangtooth pellonuline
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Odaxothrissa ansorgii
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Classification / Names Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (ray-finned fishes) > Clupeiformes (Herrings) > Clupeidae (Herrings, shads, sardines, menhadens) > Dorosomatinae
Etymology: Odaxothrissa: Greek, odax, = with the teeth + Greek, thrissa, -es = shad (Ref. 45335).   More on author: Boulenger.

Environment / Climate / Range Ecology

Freshwater; brackish; pelagic.   Tropical; 16°N - 15°S

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 13.0 cm SL male/unsexed; (Ref. 188)

Short description Morphology | Morphometrics

Dorsal spines (total): 0; Dorsal soft rays (total): 14-18; Anal spines: 0; Anal soft rays: 17 - 21; Vertebrae: 44 - 46. Diagnosis: Odaxothrissa ansorgii is characterised by the presence of prepectoral scutes, the first prepectoral scute longer and better developed than the following ones lacking ascending arms; lower jaw strongly projecting, with strong canines at symphysis; 2-4 strong backward-pointing canines on each side behind outer row of premaxillary teeth; 23-33 short lower gillrakers; anal fin with 2-3 unbranched and 14-16 branched rays; and a silver stripe along flank (Ref. 188, 81269, 81631). It resembles Odaxothrissa mento, which has 16-19 lower gillrakers, and Pellonula vorax, which lacks canines in the upper jaw and has longer gillrakers (Ref. 188).

Distribution Countries | FAO areas | Ecosystems | Occurrences | SELECT scientificname FROM scientificname WHERE scientificname = Odaxothrissa ansorgii LIMIT 1Point map | Introductions | Faunafri

Africa: lower course of Senegal River, lagoons of Côte d'Ivoire and Niger delta (Ref. 81269); also from Ogowe River to Kouilou River (Ref. 81631) and lower Congo River (Ref. 81631).

Biology     Glossary (e.g. epibenthic)

Found in rivers and streams (Ref. 188), also in lagoons (Ref. 2849, 81269).

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

Main reference Upload your references | References | Coordinator | Collaborators

Teugels, G.G., 2007. Clupeidae. p. 186-204. In M.L.J. Stiassny, G.G. Teugels and C.D. Hopkins (eds.) The fresh and brackish water fishes of Lower Guinea, West-Central Africa. Volume I. Collection Faune et Flore tropicales 42. Institut de Recherche pour le Développement, Paris, France, Muséum National d’Histoire Naturelle, Paris, France, and Musée Royal de l’Afrique Centrale, Tervuren, Belgium. 800 pp. (Ref. 81631)

IUCN Red List Status (Ref. 96402)

CITES (Ref. 94142)

Not Evaluated

Threat to humans

  Harmless




Human uses

Fisheries: subsistence fisheries
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Internet sources

BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes (gen., sp.) | DiscoverLife | Faunafri | Fishtrace | GenBank(genome, nucleotide) | GOBASE | Google Books | Google Scholar | Google | IGFA World Record | iSpecies | PubMed | Scirus | SeaLifeBase | Tree of Life | uBio | Wikipedia(Go, Search) | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.6250   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00955 (0.00458 - 0.01993), b=3.04 (2.87 - 3.21), based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trophic Level (Ref. 69278):  3.1   ±0.3 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278):  High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153):  Low vulnerability (15 of 100) .
Price category (Ref. 80766):   Low.