Actinopterygii (ray-finned fishes) >
Stomiiformes (Lightfishes and dragonfishes) >
Gonostomatidae (Bristlemouths)
Etymology: Cyclothone: Greek, kyklothen, in circle, around (Ref. 45335). More on author: Garman.
Environment / Climate / Range
Ecology
Marine; bathypelagic; oceanodromous (Ref. 51243); depth range 0 - 4416 m (Ref. 58018), usually 300 - 1500 m (Ref. 58302). Deep-water, preferred ?; 80°N - 67°S, 180°W - 180°E
Atlantic, Indian and Pacific: in tropical and subtropical waters. Southern Ocean: a single specimen recorded near Bouvet Island (56°30'S, 14°29'E). Eastern Pacific: California Current region (Ref. 35800). South China Sea (Ref.74511).
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 6.3 cm SL male/unsexed; (Ref. 59089); 6.5 cm SL (female)
Oceanic, deep-mesopelagic (Ref. 4769, 58302) and bathypelagic (Ref. 58302). Usually vertically oriented during the day (Ref. 4769). Nocturnal feeder (Ref. 9186) on copepods (Ref. 4769). Oviparous, with planktonic eggs and larvae (Ref. 35800).
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. 115185)
CITES (Ref. 94142)
Not Evaluated
Threat to humans
Harmless
Human uses
Fisheries: of no interest
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Estimates of some properties based on models
Phylogenetic diversity index (Ref.
82805): PD
50 = 0.5001 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00309 (0.00138 - 0.00690), b=3.02 (2.82 - 3.22), in cm Total Length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
Trophic Level (Ref.
69278): 3.6 ±0.53 se; Based on food items.
Resilience (Ref.
69278): High, minimum population doubling time less than 15 months (K=0.8).
Vulnerability (Ref.
59153): Low vulnerability (16 of 100) .