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); mento: The specific epiteth mento, from the Latin mentum meaning 'chin', is made in allusion of the prominent lower jaw (Ref. 54749). More on author: Regan.
Environment: milieu / climate zone / depth range / distribution range
Freshwater; pelagic; potamodromous (Ref. 51243). Tropical; 13°N - 2°S
Africa: lower parts of Volta and Niger basins (Ref. 188, 3509, 54749), including Benue River (Ref. 188, 81269); also from Cross River in Nigeria to Wouri River in Cameroon (Ref. 188, 81631). Apparently not in Congo River basin (Ref. 188).
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 14.0 cm SL male/unsexed; (Ref. 2246); max. published weight: 41.00 g (Ref. 2246)
soft rays: 18 - 21;
Vertebrae: 42 - 44. Diagnosis: Body moderate, sometimes deep, depth 25% of standard length or more; prepectoral scutes present; lower jaw strongly projecting, with strong canines at symphysis; 2-4 strong backward-pointing canines on each side behind outer row of pre-maxillary teeth; lower gillrakers 16-19, short, less than corresponding gill filaments; anal fin with 2-3 unbranched and 16-19 branched rays; silver stripe along flank (Ref. 188, 81269, 81631). First prepectoral scute as large as the following ones lacking ascending arms (Ref. 54749, 81269, 81631). It resembles Odaxothrissa ansorgii, which has more gillrakers, 23-26 vs. 16-19, and Pellonula vorax, which lacks canines in the upper jaw and has longer gillrakers, equal to gill filaments (Ref. 188)
Found in rivers and streams, also in the man-made Lake Volta, but only in the most riverine parts (Ref. 188). It feeds on small fishes, including its own juveniles, and aquatic insects (Ref. 188, 2246). Possibly migrates upstream to breed (Ref. 188). It enters artisanal fisheries, but catches are small (Ref. 188).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Gourène, G. and G.G. Teugels, 1994. Synopsis de la classification et phylogénie des Pellonulinae de l'Afrique Occidentale et Centrale (Teleostei; Clupeidae). J. Afr. Zool. 108(1):77-91. (Ref. 28136)
IUCN Red List Status (Ref. 120744)
CITES (Ref. 118484)
Threat to humans
Fisheries: subsistence fisheries
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00851 (0.00509 - 0.01424), b=2.91 (2.77 - 3.05), in cm Total Length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245
Trophic Level (Ref. 69278
): 4.3 ±0.75 se; Based on food items.
Resilience (Ref. 120179
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low vulnerability (14 of 100) .