Actinopterygii (ray-finned fishes) > Clupeiformes
(Herrings) > Clupeidae
(Herrings, shads, sardines, menhadens) > Dorosomatinae
Etymology: Sierrathrissa: Latin, serra = saw + Greek, thrissa, -es = shad (Ref. 45335).
Environment / Climate / Range
Freshwater; pelagic; depth range 0 - 8 m. Tropical; 18°N - 0°N
Length at first maturity / Size / Weight / Age
Maturity: Lm ?, range 2 - ? cm
Max length : 3.0 cm SL male/unsexed; (Ref. 188); common length : 2.3 cm SL male/unsexed; (Ref. 188)
soft rays: 17 - 21. Small, slender fishes, easily mistaken for the juveniles of Pellonula. Pre-pelvic scutes minute, 4 to 10, without arms, supporting a low membranous keel, post-pelvic scutes similar, the keel more apparent. Pelvic fin insertion well before dorsal fin; anal fin beginning under dorsal fin base. Scales apparently absent except near tail. Jaws about equal, with small teeth.
Africa: Senegal to Cameroon, apparently in both lower and upper reaches of rivers, but the latter only confirmed in the case of the Niger; also the man-made lakes Kainji (Nigeria) and Volta (Ghana).
Occurs in rivers but also in man-made lakes. Schools in open shallow waters, rising to about 30 cm at night in Lake Volta. Feeds on plankton, especially cladocerans.
Whitehead, P.J.P., 1985. FAO Species Catalogue. Vol. 7. Clupeoid fishes of the world (suborder Clupeioidei). An annotated and illustrated catalogue of the herrings, sardines, pilchards, sprats, shads, anchovies and wolf-herrings. FAO Fish. Synop. 125(7/1):1-303. Rome: FAO.
IUCN Red List Status (Ref. 90363)
Threat to humans
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
CollaboratorsPicturesStamps, CoinsSoundsCiguateraSpeedSwim. typeGill areaOtolithsBrainsVision
Estimates of some properties based on empirical models
Phylogenetic diversity index (Ref. 82805
= 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), based on all LWR estimates for this BS (Ref. 93245
Trophic Level (Ref. 69278
): 3.1 ±0.30 se; Based on food items.
Resilience (Ref. 69278
): High, minimum population doubling time less than 15 months (tm<1).
Vulnerability (Ref. 59153
): Low vulnerability (10 of 100) .