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Oxyzygonectes dovii (Gunther, 1866)
White-eye -

Life   Vertebrata   Fish   Anablepidae   Oxyzygonectes

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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Genus + Species (e.g. Gadus morhua)

Oxyzygonectes dovii   (Günther, 1866)

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Classification / Names Common names | Synonyms | Catalog of Fishes ( gen. , sp. ) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (ray-finned fishes) > Cyprinodontiformes (Rivulines, killifishes and live bearers) > Anablepidae (Four-eyed fishes, onesided livebearers & white-eye) > Oxyzygonectinae
Etymology: Oxyzygonectes: Greek, oxy = sharp + Greek, zygon = yoke + Greek, nekton = swimmer (Ref. 45335 ) .

Environment: milieu / climate zone / depth range / distribution range Ecology

Freshwater; brackish; demersal; non-migratory.   Tropical; 27°C - 30°C (Ref. 36880 )

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

Central America: Pacific drainages, between Poneloya, Nicaragua and Río Salado on the Azuero Peninsula, Panama.

Size / Weight / Age

Maturity: L m   ?   range ? - ? cm
Max length : 15.0 cm TL male/unsexed; (Ref. 27139 )

Biology     Glossary (e.g. epibenthic)

Many inhabit brackish waters, found in rivers of low elevation, up to 15 m above seal level. Feed on detritus, algae and sometimes on terrestrial insects (Ref. 36880 ). 35 cm max TL (Ref. 2059 ). Not a seasonal killifish. Has been bred in captivity (Ref. 41756 ).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Main reference Upload your references | References | Coordinator : Ghedotti, Michael J. | Collaborators

Huber, J.H. , 1996. Killi-Data 1996. Updated checklist of taxonomic names, collecting localities and bibliographic references of oviparous Cyprinodont fishes (Atherinomorpha, Pisces). Société Française d'Ichtyologie, Muséum National d'Histoire Naturelle, Paris, France, 399 p. (Ref. 27139 )

IUCN Red List Status (Ref. 115185 )

    Not Evaluated  

CITES (Ref. 115941 )

Not Evaluated

CMS (Ref. 116361 )

Not Evaluated

Threat to humans


Human uses

Aquarium: commercial FAO(Publication : search ) | FishSource |

More information

FAO areas
Food items
Food consumption
Common names
Egg development
Larval dynamics
Aquaculture profile
Allele frequencies
Mass conversion
Stamps, Coins Misc.
Swim. type
Gill area


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Summary page | Point data | Common names | Photos

Internet sources

Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes ( gen. , sp. ) | DiscoverLife | ECOTOX | Faunafri | Fishtrace | GenBank( genome , nucleotide ) | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | SeaLifeBase | Tree of Life | Wikipedia( Go , Search ) | World Records Freshwater Fishing | Zoological Record

Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805 ):  PD 50 = 1.0000   [Uniqueness, from 0.5 = low to 2.0 = high]. Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm Total Length, based on all LWR estimates for this body shape (Ref. 93245 ). Trophic Level (Ref. 69278 ):  2.5   ±0.26 se; Based on food items. Resilience (Ref. 69278 ):  Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.). Vulnerability (Ref. 59153 ):  Low to moderate vulnerability (31 of 100) .

Entered by Froese, Rainer Modified by Casal, Christine Marie V. Fish Forum
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