Actinopteri (ray-finned fishes) > Anguilliformes
(Eels and morays) > Ophichthidae
(Snake eels) > Ophichthinae
Etymology: Apterichtus: From the Greek απτερόν (apteron), without fins, and ίχθύς (ichtus, more correctly written ichthys;
Environment: milieu / climate zone / depth range / distribution range
Marine; demersal; depth range 1 - 38 m (Ref. 101270), usually - m (Ref. ). Subtropical; 0°C - ; 37°N - 33°S, 81°W - 33°W
Western Atlantic: USA (from the Carolinas and southern Florida Keys), Bermuda, Bahamas, Lesser Antilles, and off Brazil.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 54.0 cm TL male/unsexed; (Ref. 7251)
Morphology | Morphometrics
Vertebrae: 123 - 132. This elongate species is distinguished by the following characters: tail 1.7-1.8, head 12-15, and body depth 43-53 in total length; preopercular pores 4 and pores in supratemporal canal 5; teeth conical, uniserial on jaws and vomer; vomerine teeth 3-4 ; body coloration is nearly uniform pale to tan, fresh specimens have a fine sprinkling of melanophores over the dorsal surface of the head and body, with pale areas behind eye and along lower jaw; MVF 54-128, total vertebrae 123-132 (Ref. 101270).
Burrows in sand in surf areas.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Distinct pairing (Ref. 205).
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. 124695)
Threat to humans
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 17.9 - 27.3, mean 24.8 °C (based on 155 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00129 (0.00054 - 0.00308), b=2.92 (2.72 - 3.12), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 4.0 ±0.7 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.).
Vulnerability (Ref. 59153
): Low to moderate vulnerability (32 of 100) .