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espaņol |
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Overview |
Main identification features
- lower head and belly dark dots
- 1st dorsal fin iv
- female: tail fin and anal fin grey + white edges
- shoulder: 1 long flap
- male: dorsal fin and tail fin yellow and black, anal fin black
Body slender, tapers only a little towards rear; head long (31% of standard length), depressed, profile gently convex, with indentation in front of eye; one pore between eyes, papillae on cheek and operculum; eyes small (15% of head length), close together (less than eye diameter apart); mouth large, top jaw extends past eye by ~ 1 eye diameter; teeth minute, slender, slightly curved, outer series slightly enlarged, in a narrow band on each jaw; 1 long flexible skin flap on shoulder opposite 4th-6th pectoral ray (counting from bottom); scales - present but few, minute, smooth, imbedded, non-overlapping, on tail fin base; papillae on cheek and opercle; dorsal IV,16, 1st spine filamentous in male, 4th spine wide-set; anal 14 rays, origin under 3rd-4th dorsal rays; dorsal and anal rays reach past base of tail fin; pectoral ~19 rays; tail elongate, ~25% of standard length, pointed.
Male: blue-brown; head, chest and belly heavily dotted with black; irregular dark chevrons on sides; first dorsal and inner half of second dorsal blue-grey, outer half of second dorsal yellowish; tail fin with blue-grey base, top half of fin yellowish, lower half blackish; anal fin blue-grey with a black band along the base. Female - light olive, upper head and body finely mottled with brown; lower head, chest and belly with dense dark dots; dark chevrons along side; dorsal fin as in male; tail and anal fins dark blue-grey, with white margins.
Size: 4.5 cm.
Habitat: soft bottom tide pools.
Depth: 0-5 m.
El Salvador to Panama.
Attributes
Abundance: Common.
Cites: Not listed.
Climate Zone: Equatorial (Costa Rica to Ecuador + Galapagos, Clipperton, Cocos, Malpelo).
Depth Range Max: 5 m.
Depth Range Min: 0 m.
Diet: mobile benthic crustacea (shrimps/crabs); mobile benthic gastropods/bivalves; mobile benthic worms.
Eastern Pacific Range: Northern limit=14; Southern limit=8; Western limit=-90; Eastern limit=-79; Latitudinal range=6; Longitudinal range=11.
Egg Type: Benthic; Pelagic larva.
Feeding Group: Carnivore.
FishBase Habitat: Demersal.
Global Endemism: Tropical Eastern Pacific (TEP) endemic; East Pacific endemic; All species.
Habitat: Estuary; Sand & gravel; Soft bottom (mud, sand,gravel, beach, estuary & mangrove); Soft bottom only.
Inshore Offshore: Inshore; Inshore Only.
IUCN Red List: Not evaluated / Listed.
Length Max: 4.5 cm.
Regional Endemism: Continent; Continent only; TEP endemic; Continental TEP endemic; Panamic province endemic; All species.
Residency: Resident.
Salinity: Brackish; Marine.
Water Column Position: Bottom; Bottom only;
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References |
- 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.
- Gilbert , C.H. and Starks, E.C., 1904., The fishes of Panama Bay., Mem. Calif. Acad.Sci., 4:1-304.
- Lopez , M. I. and Bussing, W. A., 1982., Lista provisional de los peces marinos de la Costa Rica., Revista de Biologia Tropical, 30(1):5-26.
- Meek , S.E. and Hildebrand, S.F., 1928., The marine fishes of Panama. Part III., Field Mus. Nat. Hist., Zool. Ser. Publ., XV:709-1045.
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Acknowledgements |
I thank Ashley MacDonald and John Pickering, University of Georgia, for technical support in building this page.
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Updated: 2024-04-26 21:38:20 gmt
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