Scientific Name
Eleutherochir opercularis  
Eleutherochir opercularis雙鰭喉褶䲗
by: Po-Feng Lee
Author (Valenciennes, 1837) Depth 0 - 18M
Chinese 雙鰭喉褶䲗 Poisonous Fish No 
Family_Chinese 鼠䲗科 Economic Fish No 
Family F453 Callionymidae Edible Fish No  Chinese In Mainland China 雙鰭喉褶䲗 
Max Length 11 cm  Aquarium Fish No  Common Name 老鼠、狗圻 
Distribution in World India Ocean to West Pacific Ocean   Distribution in Taiwan West、South 
Habitats Benthos、Estuary、Fresh Water、Coastal  Holotype Locality Mouth of Arian-Coupan R. at Pondicherry, India. 
Synonyms Callionymus opercularis, Pogonymus goslinei   
Reference Fishes of Japan(Nakabo, 2002);Fishbase(2006)  Cuvier, G. etc. 1837 Nakabo T. 2002 Nakabo T. 2002 
Specimen List ASIZP0067149. ASIZP0067449. ASIZP0802172. ASIZP0802878. ASIZP0912172. ASIZP0912878. NMMBP02056. NTMP1444.  
Common Name Flap-gilled dragonet 
Redlist Status NL Not in IUCN Redlist     
Characteristic Body elongate, depressed. Mouth large, expanded laterally. Upper edge of lower lip with many fleshy papillae. Body without lateral fold of skin below lateral line. Interorbital distance more longer than eye diameter. 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.
habitats Inhabits shallow sandy and muddy bottoms in the sea, but also enters mouths of rivers and may live even in freshwater. 
Distribution Distributed in the Indo-West Pacific from 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. It is found in southern Taiwanese waters. 
Utility No commercial value.