Gigantactis macronema Regan, 1925
Gigantactis macronema
photo by JAMARC

 Family:  Gigantactinidae (Whipnose anglers)
 Max. size:  11.65 cm SL (male/unsexed); 35.4 cm SL (female)
 Environment:  bathypelagic; depth range 650 - 2500 m
 Distribution:  Atlantic Ocean and Pacific Ocean.
 Diagnosis:  Dorsal spines (total): 0-0; Dorsal soft rays (total): 5-6; Anal spines: 0-0; Anal soft rays: 5-6. Metamorphosed females distinguished by the following characteristics: length of illicium 340-447% SL; escal bulb with lightly pigmented truncated distal prolongation; 6-20 long distal filaments; escal papillae absent; proximal escal papillae absent; short dentary teeth (longest 1.3-3.4% SL, average 2.3% SL), arranged posteriorly in two longitudinal series; length of caudal fin rays less than 45% SL; weakly developed skin coverage of proximal part of caudal fin; caudal fin rays free nearly to base (Ref. 86949).
 Biology:  Appear to be active predators which feed on midwater fishes, including Cyclothone acclinidens, Triphoturus mexicanus and Bathylagus stilbius; cephalopods like Vampyroteuthis; and various invertebrates like amphipods, natant decapod crustaceans and coelenterates (Ref. 4525). Maximum length for female from Ref. 41361.
 IUCN Red List Status: Not Evaluated  (Ref. 96402)
 Threat to humans:  harmless
 Country info:   
 

 Entered by: Garilao, Cristina V. - 26.01.98
 Modified by: Valdestamon, Roxanne Rei - 22.05.13

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