Atherinops affinis (Ayres, 1860)
Topsmelt silverside
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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).
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)
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 | Introductions | Faunafri
Eastern Pacific: Vancouver Island in British Columbia, Canada to Baja California, Mexico and the Gulf of California.
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)
Threat to humans
Harmless
Human uses
Fisheries: commercial
FAO(Publication : search) | FisheriesWiki | Sea Around Us
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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=0.00606 (-0.13247 - 0.14459), b=3.08 (2.99 - 3.17), based on LWR estimates for species & family-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) .