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Apterichtus equatorialis (Myers and Wade, 1941)
FINLESS EEL
Equatorial finless-eel

Life   Vertebrata   Fish   Ophichthidae   Apterichtus

Apterichtus equatorialis
© Copyright Ross Robertson, 2006 · 12
Apterichtus equatorialis

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Apterichtus equatorialis
© Copyright Gerald Allen, 2006 · 0
Apterichtus equatorialis
Apterichtus equatorialis
© Copyright Roger Steene, 2006 · 0
Apterichtus equatorialis

Apterichtus equatorialis
© Copyright Photographer/SFTEP, 2002 · 0
Apterichtus equatorialis
espaol

Overview
Main identification features
  • snout sharp, overhanging
  • no fins
  • tail tip = hard point
  • nostrils: rear a slit on lip, front tubular
  • pale
Tail tip a hard finless point; all fins absent; gill openings under body, converging forward; snout very pointed, overhanging; teeth of jaws in 1 row, the largest between upper jaws; posterior nostril opening outside mouth, with a flap; anterior nostril tubular.

Pale creamy yellow, with small, irregular brown spots on head and a brown stripe along mid-side.

Size: grows to at least 30 cm.

Habitat: sandy bottoms.

Depth: 15-145 m.

Western and SE Gulf of California to Colombia, Clipperton and the Galapagos.


Attributes
Abundance: Common.
Cites: Not listed.
Climate Zone: Northern Subtropical (Cortez Province + Sinaloan Gap); Northern Tropical (Mexican Province to Nicaragua + Revillagigedos); Equatorial (Costa Rica to Ecuador + Galapagos, Clipperton, Cocos, Malpelo).
Depth Range Max: 145 m.
Depth Range Min: 15 m.
Diet: bony fishes; mobile benthic crustacea (shrimps/crabs).
Eastern Pacific Range: Northern limit=30; Southern limit=-2; Western limit=-114; Eastern limit=-78; Latitudinal range=32; Longitudinal range=36.
Egg Type: Pelagic; Pelagic larva.
Feeding Group: Carnivore.
FishBase Habitat: Demersal.
Global Endemism: Tropical Eastern Pacific (TEP) endemic; East Pacific endemic; All species.
Habitat: Reef associated (reef + edges-water column & soft bottom); Sand & gravel; Soft bottom only; Soft bottom (mud, sand,gravel, beach, estuary & mangrove).
Inshore Offshore: Inshore; Inshore Only.
IUCN Red List: Not evaluated / Listed.
Length Max: 30 cm.
Regional Endemism: Island (s); Continent; Continent + Island (s); TEP endemic; All species.
Residency: Resident.
Salinity: Marine; Marine Only.
Water Column Position: Bottom; Bottom only;


Names
Scientific source:

Links to other sites

References
  • Allen , G.R. and Robertson, D.R., 1997., An Annotated Checklist of the fishes of Clipperton Atoll, Tropical Eastern Pacific., Revista de Biologia Tropical, 45:813-843.
  • Findley, L.T., Hendrickx, M.E., Brusca, R.C., van der Heiden, A.M., Hastings, P.A., Torre, J., 2003., Diversidad de la Macrofauna Marina del Golfo de California, Mexico., CD-ROM versin 1.0. Projecto de la Macrofauna del Golfo . Derechos reservados de los autores y Conservacin Internacional.
  • 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 III. Vertebrados - Parte 2., FAO3:1201-1813.
  • Myers , G.S. and Wade, C.B., 1941., Four new genera and ten new species of eels from the Pacific coast of tropical America., Allan Hancock Pacific Expeditions, 9(4):65-111.
  • Robertson , D.R. and Allen, G.A., 1996., Zoogeography of the shorefish fauna of Clipperton Atoll., Coral Reefs, 15:121-131.

Acknowledgements

I thank Ashley MacDonald and John Pickering, University of Georgia, for technical support in building this page.


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Apterichtus equatorialis, Equatorial eel
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Common name (e.g. trout)

Genus + Species (e.g. Gadus morhua)

Apterichtus equatorialis ( Myers & Wade , 1941 )

Equatorial eel Add your observation in Fish Watcher
Native range | All suitable habitat | Point map | Year 2050
This map was computer-generated and has not yet been reviewed.
Apterichtus equatorialis   AquaMaps   Data sources: GBIF OBIS
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Pictures | Google image Image of Apterichtus equatorialis (Equatorial eel) Apterichtus equatorialis
Picture by Robertson, R.

Classification / Names Common names | Synonyms | Catalog of Fishes( genus , species ) | ITIS | CoL | WoRMS | Cloffa

Teleostei (teleosts) > Anguilliformes (Eels and morays) > Ophichthidae (Snake eels) > Ophichthinae
Etymology: Apterichtus: From the Greek απτερόν (apteron), without fins, and ίχθύς (ichtus, more correctly written ichthys; masculine), fish. .
More on authors: Myers & Wade .

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

Marine; demersal; depth range 10 - 134 m (Ref. 101270 ). Tropical; 29°N - 1°S

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

Eastern Pacific: between the Gulf of California and the Galapagos Islands.

Size / Weight / Age

Maturity: L m   ?   range ? - ? cm
Max length : 31.2 cm TL male/unsexed; (Ref. 101270 )

Short description Morphology | Morphometrics

This species is distinguished by the following characters: tail 1.8-2.0, head 11-16, and body depth 43-50 in total length; preopercular pores 3 and pores in supratemporal canal 3; teeth conical and uniserial on jaws and vomer; vomerine teeth 4-5; body coloration when preserved is uniform light tan, overlain with fine sparse brown speckling, branchial region and top of head with irregular small dark spots and blotches; MVF 59138, 132-146 total vertebrae (Ref. 101270 ).

Biology     Glossary (e.g. epibenthic)

Inhabits sandy and muddy bottoms, from shallow waters (Ref. 9328 ); captured by rotenone, dredge and trawl (Ref. 101270 ).

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

Main reference Upload your references | References | Coordinator : McCosker, John E. | Collaborators

McCosker, J.E. and Y. Hibino , 2015. A review of the finless snake eels of the genus Apterichtus (Anguilliformes: Ophichthidae), with the description of five new species. Zootaxa 3941(1):49-78. (Ref. 101270 )

IUCN Red List Status (Ref. 130435 )

  Least Concern (LC)  ; Date assessed: 22 May 2007

CITES

Not Evaluated

CMS (Ref. 116361 )

Not Evaluated

Threat to humans

  Harmless





Human uses

FAO - Publication: search | FishSource |

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Summary page | Point data | Common names | Photos

Internet sources

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes : genus , species | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: genome , nucleotide | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | Tree of Life | Wikipedia: Go , Search | World Records Freshwater Fishing | Zoological Record

Estimates based on models

Preferred temperature (Ref. 123201 ): 9.5 - 17.6, mean 12.9 °C (based on 39 cells). Phylogenetic diversity index (Ref. 82804 ):  PD 50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high]. Bayesian length-weight: a=0.00089 (0.00039 - 0.00204), b=3.00 (2.80 - 3.20), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245 ). Trophic level (Ref. 69278 ):  3.8   ±0.6 se; based on size and trophs of closest relatives Resilience (Ref. 120179 ):  High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.). Fishing Vulnerability (Ref. 59153 ):  Low vulnerability (21 of 100).

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