Inhabits shallow sandy and muddy bottoms in the sea, but also enters mouths of rivers and may live even in freshwater .
Dorsal spines (total): 4; Dorsal soft rays (total): 9; Anal soft rays: 9. Head and body brown or yellow, belly lighter. Back with small light spots and dark blotches. First dorsal fin black. Anal fin whitish. Pelvic fins dark and brown or black. Second dorsal, caudal, and pectoral fins spotted with dark brown. Body without lateral fold of skin below lateral line. Interorbital distance more than eye diameter (Ref 42832).: elongated.
Behavioural data for Flap-gilled dragonet is currently being reviewed.
Marine; brackish; demersal. Tropical West Pacific: Sri Lanka, east coast of India, Andaman and Nicobar islands to western Malaysia (Penang) and Indonesia, east to the Philippines and the Ryukyu Islands, Japan.
Occurrence records from the Global Biodiversity Information Facility (GBIF) - 7 records indexed .
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