Spratellomorpha bianalis  (Bertin, 1940)

Two-finned round herring
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Image of Spratellomorpha bianalis (Two-finned round herring)
Spratellomorpha bianalis
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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)
Etymology: Spratellomorpha: Old German, sprotte (1611) = a small fish, Clupea sp.+ greek,morphe = shape (Ref. 45335).

Environment / Climate / Range Ecology

Marine; brackish; pelagic-neritic.   Tropical; 0° - 26°S, 37°E - 50°E (Ref. 188)

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 4.5 cm SL male/unsexed; (Ref. 188)

Short description Morphology | Morphometrics

Dorsal spines (total): 0; Dorsal soft rays (total): 12-18; Anal spines: 0; Anal soft rays: 16 - 27. Body a little compressed, belly rounded, without pre-pelvic scutes, but a pelvic present with slender vertical arms. Snout pointed, lower jaw projecting slightly. Last two anal fin rays separate forming a distinct little finlet. This last feature identifies the species (found in no other clupeoid of the western Indian Ocean).

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

Western Indian Ocean: Madagascar and Kenya coast (Port Tudor, Mombasa; probably more widespread).

Biology     Glossary (e.g. epibenthic)

Presumed to be a marine or estuarine species. Apparently rare.

Main reference Upload your references | References | Coordinator | Collaborators

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)

  Data deficient (DD) 

Threat to humans

  Harmless




Human uses

Fisheries: subsistence fisheries
FAO(Publication : search) | FisheriesWiki | Sea Around Us

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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 | Zoological Record

Estimates of some properties based on empirical models

Phylogenetic diversity index (Ref. 82805):  PD50 = 1.0000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00831 (-0.15099 - 0.16761), b=3.07 (2.99 - 3.16), based on LWR estimates for this family-BS (Ref. 93245).
Trophic Level (Ref. 69278):  3.1   ±0.4 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 (10 of 100) .
Price category (Ref. 80766):   Low.