Actinopterygii (ray-finned fishes) > Anguilliformes
(Eels and morays) > Ophichthidae
(Snake eels) > Ophichthinae
Etymology: Yirrkala: Aboriginal township in Gove peninsula, Arnhem, Land northern Territories in Australia. More on author: Günther.
Environment: milieu / climate zone / depth range / distribution range
Marine; freshwater; brackish; demersal. Tropical
Western Indian Ocean: Red Sea south to Natal, South Africa. Also reported from Mauritius and Reunion (Ref. 33390).
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 53.0 cm TL male/unsexed; (Ref. 3972)
Morphology | Morphometrics
Vertebrae: 167 - 174. Olive brown above, dusky on head, lighter below (Ref. 3972).
Found in estuaries. Enters freshwater (Ref. 13246).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
McCosker, J.E. and P.H.J. Castle, 1986. Ophichthidae. p. 176-186. In M.M. Smith and P.C. Heemstra (eds.) Smiths' sea fishes. Springer-Verlag, Berlin. (Ref. 3972)
IUCN Red List Status (Ref. 120744)
CITES (Ref. 115941)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Preferred temperature (Ref. 115969
): 24.7 - 27.6, mean 26.7 (based on 96 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00126 (0.00053 - 0.00299), b=2.93 (2.72 - 3.14), 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. 69278
): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low to moderate vulnerability (31 of 100) .