Actinopterygii (ray-finned fishes) > Siluriformes
(Catfish) > Ariidae
(Sea catfishes) > Ariinae
Etymology: dioctes: From the Greek dioktes meaning hunter, referring to its apparent hunting ability, diet and dentition (Ref. 40908).
Environment: milieu / climate zone / depth range / distribution range
Marine; freshwater; brackish; demersal. Tropical
Western Central Pacific: southern New Guinea and Australia.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 120 cm SL male/unsexed; (Ref. 40908); max. published weight: 19.0 kg (Ref. 40908)
Morphology | Morphometrics
soft rays: 17 - 21;
Vertebrae: 49 - 50. Teeth strong, non-depressible; in narrow bands in jaws and in four patches arranged across front palate. Snout prominent, jaw teeth exposed; mouth wide. Head somewhat venulosus, head shield almost smooth. Eye small, free of head skin, 6-14% HL. No rakers on posterior face of first two arches; gill opening wide. Body orange-yellow; lips, inside mouth and body usually covered with orange or yellow mucus, and teeth usually reddish (Ref. 40908).
Inhabits coastal and lower mangrove areas, estuaries into main rivers and lagoons (Ref. 40908, 75154).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Kailola, P.J., 2000. Six new species of fork-tailed catfishes (Pisces, Teleostei, Ariidae) from Australia and New Guinea. Beagle, Rec. Mus. Art Galler. North. Territ. 16:127-144. (Ref. 40908)
IUCN Red List Status (Ref. 119314)
CITES (Ref. 115941)
Threat to humans
Traumatogenic (Ref. 58010)
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.5625 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm Total Length, based on all LWR estimates for this body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.8 ±0.5 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278
): Very Low, minimum population doubling time more than 14 years (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Very high vulnerability (77 of 100) .