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Overview |
Main identification features
- head: white + brown spots
- body dark, belly white
- dorsal fin white
- no a
Tail tip a hard and finless point; body moderately elongate and laterally compressed; snout short, rounded at tip; eye relatively large: diameter = 1/2 length of lower jaw, 5.4-7.1% of head length; dorsal fin moderately developed, originating well forward on head, a short distance behind level of rear corner of mouth; pectoral and anal fins absent; anterior nostrils tubular; gill openings entirely under body, each with a pronounced pouch in front.
Head whitish with brown spots; remainder of body dark brown, nearly blackish except white ventrally and also with white dorsal fin.
Size: to 81 cm.
Habitat: sandy bottoms.
Depth: 0-35 m.
Central Gulf of California to Panama, Isla del Coco & (possibly) Malpelo.
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: 35 m.
Depth Range Min: 0 m.
Diet: mobile benthic crustacea (shrimps/crabs); bony fishes.
Eastern Pacific Range: Northern limit=27; Southern limit=4; Western limit=-112; Eastern limit=-79; Latitudinal range=23; Longitudinal range=33.
Egg Type: Pelagic; Pelagic larva.
Feeding Group: Carnivore.
FishBase Habitat: Demersal.
Global Endemism: Tropical Eastern Pacific (TEP) endemic; East Pacific endemic; All species.
Habitat: 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: 81 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;
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Names |
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Links to other sites |
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References |
- 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 versión 1.0. Projecto de la Macrofauna del Golfo . Derechos reservados de los autores y Conservación 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.
- 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.
- Love, M.S., Mecklenburg, C.W., Mecklenburg, T.A., Thorsteinson, L.K., 2005., es of the West Coast and Alaska: a checklist of North Pacific and Artic Ocena species from Baja California to the Alaska-Yukon border., U.S. Department of the Interior, U.S. Geological Survey, Biological Resources Division, 288pp.
- McCosker, J.E., 1974., A revision of the ophichthid eel genus Letharchus., Copeia, 1974:619-629.
- Osburn , R. C. and Nichols, J. T., 1916., Shore Fishes Collected by the 'Albatross' Expedition in Lower California with Descriptions of New Species., Bull. Amer. Mus. Nat. Hist., 35:139-181.
- Schultz , L.P. and Barton, O., 1960., A redescription of Letharchus pacificus, a snake eel from the eastern Pacific ocean., Copeia, 1960:351-353.
- Villareal-Cavazos, A., Reyes-Bonilla, H., Bermúdez-Almada, B. and Arizpe-Covarrubias, O., 2000., Los peces del arrecife de Cabo Pulmo, Golfo de California, México: Lista sistemática y aspectos de abundancia y biogeografía., Rev. Biol. Trop., 48:413-424.
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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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http://www.fishbase.org/Summary/speciesSummary.php?genusname=Paraletharchus&speciesname=pacificus ---> http://192.134.151.83/Summary/speciesSummary.php?genusname=Paraletharchus&speciesname=pacificus http://192.134.151.83/Summary/speciesSummary.php?genusname=Paraletharchus&speciesname=pacificus ---> https://fishbase.mnhn.fr/Summary/speciesSummary.php?genusname=Paraletharchus&speciesname=pacificus https://fishbase.mnhn.fr/Summary/speciesSummary.php?genusname=Paraletharchus&speciesname=pacificus ---> https://fishbase.mnhn.fr/summary/Paraletharchus-pacificus.html
Paraletharchus pacificus, Pacific sailfin eel
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Paraletharchus pacificus
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Teleostei (teleosts) >
Anguilliformes
(Eels and morays) >
Ophichthidae
(Snake eels) > Ophichthinae
Etymology:
Paraletharchus:
Greek, para = the side of + Greek, lethargia = lethargy + Greek, archos = anus (Ref.
45335
)
.
More on authors:
Osburn
&
Nichols
.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; demersal; depth range ? - 35 m (Ref.
9328
). Tropical; 27°N - 9°N
Eastern Central Pacific: Gulf of California to Costa Rica.
Size / Weight / Age
Maturity: L
m
 
?
  range ? - ? cm
Max length : 81.0 cm TL male/unsexed; (Ref.
9328
)
Short description
Morphology
|
Morphometrics
Vertebrae
: 156 - 167. Body dark tan to dark brown; with spots anteriorly, coalescing along the posterior trunk and tail to become uniformly dark. Spotted head and dorsal fin. Tubular anterior nostril. Suborbital pores three. Anal fin present. (Ref.
27478
).
Inhabits sandy and rocky bottoms up to a depth of 35 m.
Life cycle and mating behavior
Maturity
|
Reproduction
|
Spawning
|
Eggs
|
Fecundity
|
Larvae
McCosker, J.E. and R.H. Rosenblatt
, 1995. Ophichthidae. Tiesos, serpentones. p. 1326-1341. In W. Fischer, F. Krupp, W. Schneider, C. Sommer, K.E. Carpenter and V. Niem (eds.) Guia FAO para Identification de Especies para lo Fines de la Pesca. Pacifico Centro-Oriental. 3 Vols. FAO, Rome. (Ref.
9328
)
IUCN Red List Status (Ref.
130435
)
Least Concern (LC)
; Date assessed:
23 May 2007
CITES
Not Evaluated
Not Evaluated
Threat to humans
Harmless
Human uses
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Zoological Record
Estimates based on models
Phylogenetic diversity index (Ref.
82804
): PD
50
= 0.7500 [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
): 3.9 ±0.6 se; based on size and trophs of closest relatives
Resilience (Ref.
120179
): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153
): Moderate to high vulnerability (52 of 100).
Nutrients (Ref.
124155
): Calcium = 108 [66, 183] mg/100g; Iron = 0.987 [0.593, 1.603] mg/100g; Protein = 18 [16, 21] %; Omega3 = 0.169 [0.075, 0.444] g/100g; Selenium = 66.6 [35.4, 134.2] μg/100g; VitaminA = 13.3 [4.2, 39.5] μg/100g; Zinc = 0.942 [0.707, 1.285] mg/100g (wet weight);
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Updated: 2024-04-19 13:08:53 gmt
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