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;
masculine), fish.. More on author: Peters.
Environment: milieu / climate zone / depth range / distribution range
Marine; demersal; depth range 10 - 250 m (Ref. 101270), usually - m (Ref. ). Subtropical; 0°C - ; 45°N - 20°N, 26°W - 17°E
Eastern Atlantic: Mediterranean coast of Israel; from Utica Island, southern Tyrrhenian Sea;, from Madeira, the Canary and Cape Verde Islands; possibly from Angola.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 49.3 cm TL male/unsexed; (Ref. 4455)
Morphology | Morphometrics
Vertebrae: 150 - 157. This species is distinguished by the following characters: tail 1.8-2.0 in TL; head 14-16 in TL; body depth 59-100 in TL; preopercular pores 3; supratemporal canal with 3 pores; conical teeth, uniserial on jaws and vomer; vomerine teeth 2-4; coloration reddish or brownish, tip of jaws black, belly whitish; sometimes a large number of small darker patches on back and upper side; MVF 73-154, total vertebrae 150-157(n=8). (Ref. 101270).
Burrows in sand or mud on the continental shelf (Ref. 4455).
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
): 16.1 - 21, mean 19.3 °C (based on 52 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
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low to moderate vulnerability (30 of 100) .