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Oxyzygonectes dovii (Gunther, 1866)
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Oxyzygonectes dovii
© Copyright Ross Robertson, 2006 · 12
Oxyzygonectes dovii

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Oxyzygonectes dovii
© Copyright Ross Robertson, 2006 · 12
Oxyzygonectes dovii

Main identification features
  • head pointed; top profile horizontal
  • 1 dorsal fin at rear
  • top eye white
  • dorsal, anal and tail fins : yellow + black and white mesh

Elongate, compressed body; head pointed at front when viewed from side; upper profile straight from tip of snout to base of dorsal fin; inner jaw teeth with 3 points; single dorsal fin, far back on body near base of tail; anal fin far back on body, near base of tail; large round tail fin; pelvic fins on abdomen, origin behind pectoral fin; 29-30 lateral scales; male without external sex organ, fertilization is external.

Upper body grey, paling to pearl grey on flanks; top of eyes silvery white; dark brown bars on rear flank in male; outer half of dorsal, anal and tail fins of adults yellow, inner half with network of black and white lines; pelvic fins bright yellow; pectorals pale yellow; dorsal, anal and tail fins of juveniles plain dark grey.

Size: to 35 cm.

Habitat: tidal estuaries and swamps; enter freshwater.

Depth: 0-2 m.

Diet detritus, algae and insects.

Nicaragua to western Panama.

Abundance: Common.
Cites: Not listed.
Climate Zone: Equatorial (Costa Rica to Ecuador + Galapagos, Clipperton, Cocos, Malpelo).
Depth Range Max: 2 m.
Depth Range Min: 0 m.
Diet: zooplankton; Insects; pelagic fish eggs.
Eastern Pacific Range: Northern limit=13; Southern limit=8; Western limit=-87; Eastern limit=-82; Latitudinal range=5; Longitudinal range=5.
Egg Type: Benthic; No pelagic larva; No pelagic phase.
Feeding Group: Carnivore; Planktivore.
FishBase Habitat: Demersal.
Global Endemism: Tropical Eastern Pacific (TEP) endemic; East Pacific endemic; All species.
Habitat: Estuary; Soft bottom (mud, sand,gravel, beach, estuary & mangrove); Soft bottom only; Freshwater.
Inshore Offshore: Inshore; Inshore Only.
IUCN Red List: Not evaluated / Listed.
Length Max: 35 cm.
Regional Endemism: Continent only; Continent; TEP endemic; Continental TEP endemic; Panamic province endemic; All species.
Residency: Resident.
Salinity: Brackish; Freshwater; Non Marine.
Water Column Position: Bottom; Bottom only;

Scientific source:

Links to other sites

  • Dorda, J. and Perdices, A., 1997., Ictiofauna continental de la Isla de Coiba (Panamá). En Castroviejo, S. y Velayos M. (Eds): Flora y fauna del Parque Nacional de Coiba (Panamá). Agencia Española de Cooperación Internacional., Serviprint:155-175.
  • Günther, A., 1866., Catalogue of fishes in the British Museum. Catalogue of the Physostomi, containing the families Salmonidae, Percopsidae, Galaxidae, Mormyridae, Gymnarchidae, Esocidae, Umbridae, Scombresocidae, Cyprinodontidae, collection of the British Museum., Brithish Museum (Natural History)6:1-368.
  • Rojas , J. R. , Pizarro , J. F. and Castro, M.V., 1994., Diversidad y Abundancia íctica en tres áreas de manglar en el Golfo de Nicoya, Costa Rica., Revista de Biologia Tropical, 42:663-672.


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