Adults inhabit weedy and sandy areas of coastal reefs . They are found on open muddy substrates from shallow estuaries to deep offshore. Males elongate with age . Monogamous .
Dorsal spines (total): 2; Dorsal soft rays (total): 24 - 30; Anal spines: 0; Anal soft rays: 24 - 30; Vertebrae: 19. body width 2.0-2.6 in head length; body depth 2.0-3.1 in SL, head length 2.7-3.2 in SL; snout length 3.7-4.1 in SL; eye diameter 2.7-3.7 in head length; second dorsalmost caudal ray elongate and filamentous in male .: short and / or deep; Cross section: compressed.
Behavioural data for Hairfinned leatherjacket is currently being reviewed.
Diet information for Hairfinned leatherjacket is currently being compiled.
Reproduction data for Hairfinned leatherjacket is currently being compiled.
Marine; reef-associated; non-migratory ; depth range 34 - 46 m . Tropical; 35°N - 31°N, 130°E - 141°E
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