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 485 - 550 m (Ref. 9869), usually - m (Ref. ). Deep-water; 0°C -
Atlantic Ocean: southern Nova Scotia south to the northern part of the Gulf of Mexico, on the eastern seaboard of Florida, in the Bahama, in the west and southern Caribbean, and around Venezuela, Guyana, Suriname, Tobago and Brazil.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 17.3 cm SL male/unsexed; (Ref. 37108)
soft rays: 9. Pectoral fin long, its tip extending beyond anal fin origin (Ref. 13608). Scales adherent, spinules small, margins serrate, spines on fin rays small. Denticles on head bones small, septae relatively strong (Ref. 37108).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Kotlyar, A.N., 1986. Systematics and distribution of species of the genus Hoplostethus Cuvier (Beryciformes, Trachichthyidae). Trudy Inst. Okeanol. 121:97-140. (Ref. 9869)
IUCN Red List Status (Ref. 124695)
Threat to humans
Fisheries: of no interest
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 8.3 - 13.5, mean 9.4 °C (based on 21 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01660 (0.00714 - 0.03859), b=3.05 (2.85 - 3.25), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.6 ±0.59 se; based on food items.
Resilience (Ref. 120179
): Low, minimum population doubling time 4.5 - 14 years (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Moderate to high vulnerability (52 of 100) .