Teleostei (teleosts) >
Anguilliformes (Eels and morays) >
Ophichthidae (Snake eels) > Ophichthinae
Etymology: Letharchus: Greek, letheia = apathetic + Greek, archos = anus (Ref. 45335).
Eponymy: Dr Richard Heinrich ‘Dick’ Rosenblatt (1930–2014) was an American ichthyologist and oceanographer. [...] (Ref. 128868), visit book page.
More on author: McCosker.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; demersal; depth range 0 - 17 m (Ref. 9328). Tropical; 24°N - 4°N
Eastern Pacific: Mexico to Colombia.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 35.0 cm TL male/unsexed; (Ref. 96339)
Short description
Identification keys | Morphology | Morphometrics
Vertebrae: 144 - 151. Brown or black head with white markings; uniformly dark brown to black body and tail; white dorsal fin. No anal fin. Anterior nostril hole without raised rim. Suborbital pores 4; second pore displaced medially when viewed from above (Ref. 27478).
Body shape (shape guide): eel-like.
Inhabits sandy bottoms, from the intertidal zone up to a depth of 17 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: Version 2025-2 (Global))
Threat to humans
Harmless
Human uses
Tools
Special reports
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Internet sources
Estimates based on models
Phylogenetic diversity index (Ref. 82804) |
PD50 = 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00093 (0.00041 - 0.00212), b=2.99 (2.79 - 3.19), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
Trophic level (Ref. 69278) |
3.7 ±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 (24 of 100). 🛈 |