Actinopteri (ray-finned fishes) > Stomiiformes
(Lightfishes and dragonfishes) > Gonostomatidae
Etymology: Cyclothone: Greek, kyklothen, in circle, around (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
Marine; bathypelagic; depth range 25 - 4938 m (Ref. 58302), usually 300 - 800 m (Ref. 58302). Deep-water; 0°C - ; 60°N -
Circumglobal. Atlantic Ocean: scattered records from Iceland (Ref. 12462) to the tropical region (Ref. 4769); off Saldanha, South Africa (Ref. 3991). Western Pacific: Japan (Ref. 559), Papua New Guinea (Ref. 6993), Australia (Ref. 7300). Southeast Pacific: Peru (Ref. 45845). South China Sea (Ref.74511)
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 2.9 cm SL male/unsexed; (Ref. 4769); 3.4 cm SL (female)
Oceanic (Ref. 4769). Mesopelagic (Ref. 58302, 75154) and bathypelagic (Ref. 5951). Does not exhibit diel vertical migrations (Ref. 4769). Lipid content is 5.3 % in fresh body weight and wax ester is 54.0 % in total lipids (Ref. 9193).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Badcock, J., 1984. Gonostomatidae. p. 284-301. In P.J.P. Whitehead, M.-L. Bauchot, J.-C. Hureau, J. Nielsen and E. Tortonese (eds.) Fishes of the north-eastern Atlantic and the Mediterranean. volume 1. UNESCO, Paris. (Ref. 4769)
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
): 5.3 - 14.1, mean 8.9 °C (based on 1317 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5001 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00363 (0.00141 - 0.00937), b=3.07 (2.85 - 3.29), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.1 ±0.3 se; based on size and trophs of closest relatives
Resilience (Ref. 120179
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low vulnerability (10 of 100) .