Actinopteri (ray-finned fishes) > Siluriformes
(Catfishes) > Ariidae
(Sea catfishes) > Ariinae
Etymology: Hexanematichthys: Greek, exa = six + Greek, nema = fialement + Greek, ichthys = fish (Ref. 45335). More on author: Hamilton.
Environment: milieu / climate zone / depth range / distribution range
Marine; brackish; demersal; amphidromous (Ref. 51243). Tropical
Indo-West Pacific: Pakistan, west and east coast of India, Bangladesh, Myanmar, Thailand, Malaysia, Singapore, Indo-Australian Archipelago (but not occurring in Papua New Guinea or Australia). Also reported from China, and Philippines (Ref. 7050). Reports from eastern Africa and the Red Sea need confirmation.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 45.0 cm TL male/unsexed; (Ref. 7050); common length : 30.0 cm TL male/unsexed; (Ref. 3290)
Found along the coastline, mainly around estuaries. Ascends into fresh water of the upper tidal zone. Occurs in the Mekong delta (Ref. 12693). Feeds on invertebrates and small fishes. An important food fish (Ref. 3290). Marketed fresh (Ref. 12693).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Jayaram, K.C., 1984. Ariidae. In W. Fischer and G. Bianchi (eds.) FAO species identification sheets for fishery purposes. Western Indian Ocean fishing area 51. Vol. 1. FAO, Rome. pag. var. (Ref. 3290)
IUCN Red List Status (Ref. 123251)
CITES (Ref. 123416)
Threat to humans
Traumatogenic (Ref. 58010)
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 26.5 - 29.3, mean 28.6 °C (based on 2316 cells).
Phylogenetic diversity index (Ref. 82805
= 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00513 (0.00264 - 0.00996), b=3.11 (2.94 - 3.28), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 4.0 ±0.61 se; based on food items.
Resilience (Ref. 120179
): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Moderate vulnerability (40 of 100) .