Main identification features
Slender, elongate, compressed at rear; belly rounded; eye large (~1/3 head length, equal to snout length); head relatively narrow, deep, with bony crest on top, upper profile relatively straight; mouth oblique, very extendible; top of upper jaw straight, extends to eye, lower jaw with prominent elevation (its height >1/3 jaw length); teeth small, simple, inconspicuous, in bands on jaws, none on tongue; projection at rear of lower jaw large, high; 1st dorsal V-VII spines, well in front of anal; 2nd dorsal I, 8-10, origin over or just behind anal origin; anal I,11, about same length as 2nd dorsal, margin of fin straight; pelvic 2/3 length of pectoral, which is >3/4 length of head; scales small, 42-45 on lateral line, 6 rows above lateral line
Greenish white on back, silvery with bluish reflections below; moderate silver stripe (covering 3rd row of scales down from top plus edges of two adjacent rows) bordered above by an iridescent blue-green line, from gill opening to tail, at front silver stripe is nearly as wide as pectoral fin base; tips of tail dusky.
Size: 10 cm.
Habitat: shallow protected coastal bays and lagoons, and around reefs.
Depth: 0-10 m?.
A tropical west Atlantic species that was introduced into our region at Tumaco, Colombia.
Cites: Not listed.
Climate Zone: Equatorial (Costa Rica to Ecuador + Galapagos, Clipperton, Cocos, Malpelo).
Depth Range Max: 10 m.
Depth Range Min: 0 m.
Diet: zooplankton; pelagic fish larvae; pelagic fish eggs.
Eastern Pacific Range: Northern limit=2; Southern limit=2; Western limit=-79; Eastern limit=-79; Latitudinal range=1; Longitudinal range=1.
Egg Type: Benthic; Pelagic larva.
Feeding Group: Planktivore.
FishBase Habitat: Reef Associated.
Global Endemism: West Atlantic Introducee; TEP non-endemic; All species.
Habitat: Water column; Reef associated (reef + edges-water column & soft bottom).
Inshore Offshore: Inshore; Inshore Only.
IUCN Red List: Not evaluated / Listed.
Length Max: 10 cm.
Regional Endemism: Continent; Tropical Eastern Pacific (TEP) non-endemic; Eastern Pacific non-endemic; Continent only; All species.
Salinity: Brackish; Non Marine.
Water Column Position: Near Surface; Surface; Water column only;
Links to other sites|
- Fischer , W. , Krup , F. , Schneider , W. , Sommer , C. , Carpenter , K. E. and Niem, V. H., 1995., Guia FAO para la Identificacion de Especies de para los fines de la Pesca. Pacifico Centro-Oriental. Volumen II. Vertebrados - Parte 1., FAO2:647-1200.
- Goode, G. B., 1877., A preliminary catalogue of the reptiles, fishes, and leptocardians of the Bermudas, with descriptions of four species of fishes believed to be new., Am. J. Sci. Arts., 14:289-298.
- Jordan , D.S. and Evermann, B.W., 1896., The fishes of North and Middle America: a descriptive catalogue of the species of fish-like vertebrates found in the waters of North America, north of the Isthmus of Panama. Part I., Bull. U.S. Nat. Mus., 47:1-1240.
I thank Ashley MacDonald and John Pickering, University of Georgia, for technical support in building this page.
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