Actinopteri (ray-finned fishes) > Trachichthyiformes
(Roughies) > Trachichthyidae
Etymology: Hoplostethus: Greek, hoplon = weapon + Greek, stetho, stethion = brest; literal = to prick a little breast (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
Marine; bathypelagic; depth range 800 - 875 m (Ref. 9872). Deep-water
Indian Ocean: northern section of the Mentawai ridge. Also reported from Western Australia (Ref. 7300).
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 20.3 cm SL male/unsexed; (Ref. 9872)
Found on the continental slope (Ref. 75154).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Kotlyar, A.N., 1980. Systematic and distribution of trachichthyid fishes (Trachichthyidae, Beryciformes) of the Indian ocean. Trudy Inst. Okeanol. 110:177-224. (Ref. 9872)
IUCN Red List Status (Ref. 125652)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 2 - 6.4, mean 5.2 °C (based on 12 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01660 (0.00733 - 0.03756), b=3.05 (2.85 - 3.25), in cm total length, based on LWR estimates for this Subfamily-BS (Ref. 93245
Trophic level (Ref. 69278
): 3.5 ±0.5 se; based on size and trophs of closest relatives
Resilience (Ref. 120179
): Very Low, minimum population doubling time more than 14 years (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153
): Low vulnerability (15 of 100) .
Climate Vulnerability (Ref. 125649
): (0 of 100) .