Cyclothone pallida Brauer, 1902
Tan bristlemouth
photo by SFSA

Family:  Gonostomatidae (Bristlemouths)
Max. size:  4.8 cm SL (male/unsexed); 7.5 cm SL (female)
Environment:  bathypelagic; marine; depth range 16 - 4663 m
Distribution:  Atlantic, Indian and Pacific: in tropical to temperate waters. Southern Ocean: Indian Ocean sector south of Australia. South China Sea (Ref.74511).
Diagnosis:  Dorsal spines (total): 0-0; Dorsal soft rays (total): 12-15; Anal spines: 0-0; Anal 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).
Biology:  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).
IUCN Red List Status: Least Concern (LC); Date assessed: 16 May 2013 Ref. (130435)
Threat to humans:  harmless


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