Linophryne arcturi (Beebe, 1926)

Family:  Linophrynidae (Leftvents)
Max. size:  5.1 cm (female)
Environment:  bathypelagic; marine; depth range 650 - 1900 m
Distribution:  Eastern Atlantic: south of Madeira. Eastern Pacific: Gulf of Panama and Coco Is., Costa Rica.
Diagnosis:  Dorsal soft rays (total): 3-3; Anal soft rays: 3-3. Metamorphosed females distinguished by the following characteristics: escal bulb with compressed, flange-shaped anterior appendage; stout, cylindrical distal escal appendage with terminal filament; base of distal escal appendage with pair of structures on posterior margin, each consisting of a hemispherical protuberance with digitiform anterior prolongation; posterior escal appendage compressed; barbel 118-357% SL, with several short, unpigmented distal branches bearing sessile and stalked photophores; stem of barbel pigmented with or without short simple lateral branches, each with distal photophore (Ref. 86949).
Biology:  Also mesopelagic (Ref. 10762).
IUCN Red List Status: Least Concern (LC); Date assessed: 11 October 2018 Ref. (130435)
Threat to humans:  harmless


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