Gilchristella aestuaria  (Gilchrist, 1913)

Gilchrist's round herring
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Gilchristella aestuaria
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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) > Ehiravinae
Etymology: Gilchristella: Because of John Gilchrist, father of the South African ichthyology; Cape Town, 1925.

Environment / Climate / Range Ecology

Marine; freshwater; brackish; pelagic-neritic; amphidromous.   Subtropical; 25°S - 36°S, 17°E - 34°E (Ref. 188)

Length at first maturity / Size / Weight / Age

Maturity: Lm 3.0, range 2 - 3 cm
Max length : 10.0 cm SL male/unsexed; (Ref. 4967); max. reported age: 6 years (Ref. 7248)

Short description Morphology | Morphometrics

Dorsal spines (total): 0; Dorsal soft rays (total): 12-18; Anal spines: 0; Anal soft rays: 16 - 27. With 6 to 9 unkeeled pre-pelvic scutes, followed by an equally thin pelvic scute, all with slender ascending arms; no post-pelvic scutes. Snout pointed, lower jaw a little prominent, with a single row of fine teeth in each jaw; second supra-maxilla paddle-shaped. Gill rakers small but present on posterior face of third epibranchial (cf. absent in Ehirava fluviatilis).

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

Africa: Lake Piti, Mozambique along southern African coast to Saldanha Bay, possibly mouth of Orange River (but perhaps confused by presence of a second undescribed species). Reported occurrence in India (Ref. 32693) needs validation (Ref. 33664). Reports of the occurrence in Madagascan waters (Ref. 13333) are in error (Ref. 33664).

Biology     Glossary (e.g. epibenthic)

Occurs primarily in estuaries and lagoons, but also found in lakes and rivers. Entire life cycle is completed in the estuary (Ref. 32693). Can tolerate salinities under 4 ppt and of up to 52.6 ppt (Ref. 32693). Breeds throughout the year with a peak in spring and early summer. Maturity may be attained within the first or second year and an age of up to 5 or 6 years is recorded. Feeds chiefly on zooplankton by filtering or selecting individual organisms from the water column (Ref. 7248). Utilized fresh or dried and salted (Ref. 12484).

Main reference Upload your references | References | Coordinator | Collaborators

Skelton, P.H., 1993. A complete guide to the freshwater fishes of southern Africa. Southern Book Publishers. 388 p. (Ref. 7248)

IUCN Red List Status (Ref. 90363)

CITES (Ref. 94142)

Not Evaluated

Threat to humans

  Harmless




Human uses

Fisheries: subsistence fisheries; bait: usually
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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 models

Phylogenetic diversity index (Ref. 82805):  PD50 = 1.0000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00501 (0.00237 - 0.01060), b=3.09 (2.90 - 3.28), based on LWR estimates for species & Subfamily-body shape (Ref. 93245).
Trophic Level (Ref. 69278):  3.3   ±0.5 se; Based on diet studies.
Resilience (Ref. 69278):  High, minimum population doubling time less than 15 months (tm=0.5).
Vulnerability (Ref. 59153):  Low vulnerability (12 of 100) .
Price category (Ref. 80766):   Low.