Actinopterygii (ray-finned fishes) > Stomiiformes
(Lightfishes and dragonfishes) > Gonostomatidae
Etymology: Cyclothone: Greek, kyklothen, in circle, around (Ref. 45335).
Environment / Climate / Range
Marine; bathypelagic; depth range 16 - 4663 m (Ref. 58302), usually 600 - 1800 m (Ref. 58302). Deep-water, preferred ?; 61°N - 40°S, 180°W - 180°E
Atlantic, Indian and Pacific: in tropical to temperate waters. Southern Ocean: Indian Ocean sector south of Australia. South China Sea (Ref.74511).
Length at first maturity / Size / Weight / Age
Maturity: Lm 4.3  range ? - ? cm
Max length : 4.8 cm SL male/unsexed; (Ref. 5162); 7.5 cm SL (female)
soft rays: 16 - 19. Light to dark brown in color; transparent or slightly pigmented immediately anterior to anal and dorsal origin; median fin rays and internasal area pigmented; meningeal pigment extending to level of rear margin of eye (Ref. 3991).
Meso- to bathypelagic (Ref. 58302). Oceanic, precise depth range dependent upon developmental stage, latitude, season (Ref. 4769). Does not exhibit diel vertical migrations (Ref. 4769). Lipid content is 2.3 % in fresh body weight and wax ester is 34.0 % in total lipids (Ref. 9193).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Gon, O., 1990. Gonostomatidae. p. 116-122. In O. Gon and P.C. Heemstra (eds.) Fishes of the Southern Ocean. J.L.B. Smith Institute of Ichthyology, Grahamstown, South Africa. 462 p. (Ref. 5162)
IUCN Red List Status (Ref. 109396)
CITES (Ref. 94142)
Threat to humans
Fisheries: of no interest
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.5001 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00363 (0.00142 - 0.00928), b=3.07 (2.84 - 3.30), based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.2 ±0.36 se; Based on food items.
Resilience (Ref. 69278
): Medium, minimum population doubling time 1.4 - 4.4 years (tm=3.5).
Vulnerability (Ref. 59153
): Moderate vulnerability (35 of 100) .