Actinopterygii (ray-finned fishes) > Siluriformes
(Catfish) > Ariidae
(Sea catfishes) > Ariinae
Etymology: hainesi: Named for Alan K. Haines for his significant contribution to our knowledge of Ariidae in the Australian and New Guinea region (Ref. 40908).
Environment / Climate / Range
Marine; brackish; demersal. Tropical
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 32.0 cm FL male/unsexed; (Ref. 40908)
Morphology | Morphometrics
soft rays: 20 - 23;
Vertebrae: 49 - 50. Palate without teeth (but autogenous tooth plates present); jaw teeth slender, in short, oblong band. Lips fleshy, thin; mouth small, lower jaw truncate. Barbels thin, short, maxillary barbel reaching only just beyond eye; base of chin barbels close together. Eye large, 14-24% HL, lateral. Dorsomedian head groove elongate, deep posteriorly. Gill rakers along posterior of all arches; gill opening slightly restricted; two large epithelial flaps on palate posteriorly and double folds on upper limb of first two gill arches. Longitudinal furrows anterodorsally on body. Fin spines thin, long, slender; adipose fin short-based, over posterior two-thirds of anal; ventral fin pad of sexually mature females scalloped and tapered. Dark grey above and iridescent purple; palate and branchial chamber often purplish brown to charcoal (Ref. 40908).
Western Central Pacific: southern New Guinea and northern Australia.
Mainly in the marine waters of the lower estuaries, along the coast and off river mouths (Ref. 40908).
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. 96402)
CITES (Ref. 94142)
Threat to humans
Traumatogenic (Ref. 58010)
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00603 (0.00196 - 0.01854), b=3.15 (2.90 - 3.40), based on LWR estimates for this Subfamily-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.6 ±0.5 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
): Moderate vulnerability (41 of 100) .