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Atherinops affinis  (Ayres, 1860)

Topsmelt silverside
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Atherinops affinis   AquaMaps   Data sources: GBIF OBIS
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Image of Atherinops affinis (Topsmelt silverside)
Atherinops affinis
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Classification / Names Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (ray-finned fishes) > Atheriniformes (Silversides) > Atherinopsidae (Neotropical silversides) > Atherinopsinae
Etymology: Atherinops: Greek, atherina, the Greek name for the eperlane; 1770 + Greek, ops = appearance (Ref. 45335);  affinis: affinis which means related - in this case to fishes of the genus Atherina (Ref. 6885).

Environment / Climate / Range Ecology

Marine; brackish; pelagic-neritic.   Subtropical; 55°N - 23°N

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 37.0 cm TL male/unsexed; (Ref. 9273); common length : 28.0 cm TL male/unsexed; (Ref. 9273); max. reported age: 9 years (Ref. 72477)

Short description Morphology | Morphometrics

Dorsal spines (total): 6 - 10; Dorsal soft rays (total): 8-14; Anal spines: 1; Anal soft rays: 19 - 25; Vertebrae: 44 - 52. Blue gray to green above, silvery below; a striking silver band bordered above with blue extends the full length of the body (Ref. 6885). Branchiostegal rays: 5-6 (Ref. 36497).

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

Eastern Pacific: Vancouver Island in British Columbia, Canada to Baja California, Mexico and the Gulf of California.

Biology     Glossary (e.g. epibenthic)

Common in bays, muddy and rocky areas and kelp beds, also in estuaries (Ref. 36497). Form schools. Adults feed on zooplankton (Ref. 9273), while juveniles feed on algae and kelp fly larvae (Ref. 4930). Demersal spawner in nearshore habitats (Ref. 56049). Oviparous, with planktonic, primarily neustonic larvae (Ref. 36497). Eggs are attached to spawning substrate and to one another by adhesive filaments (Ref. 36497).

Main reference Upload your references | References | Coordinator | Collaborators

Eschmeyer, W.N., E.S. Herald and H. Hammann, 1983. A field guide to Pacific coast fishes of North America. Houghton Mifflin Company, Boston, U.S.A. 336 p.

IUCN Red List Status (Ref. 90363)

CITES (Ref. 94142)

Not Evaluated

Threat to humans

  Harmless




Human uses

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

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Internet sources

BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes (gen., sp.) | DiscoverLife | ECOTOX | Faunafri | Fishtrace | GenBank(genome, nucleotide) | GOBASE | Google Books | Google Scholar | Google | IGFA World Record | iSpecies | Public aquariums | 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=0.00646 (0.00297 - 0.01404), b=3.05 (2.85 - 3.25), based on LWR estimates for species & Subfamily-BS (Ref. 93245).
Trophic Level (Ref. 69278):  2.8   ±0.28 se; Based on food items.
Resilience (Ref. 69278):  Medium, minimum population doubling time 1.4 - 4.4 years (tm=2; tmax=7; Fec = 1,000).
Vulnerability (Ref. 59153):  Low to moderate vulnerability (32 of 100) .
Price category (Ref. 80766):   Unknown.