Scientific Name
Cynoglossus bilineatus  
Cynoglossus bilineatus雙線舌鰨
by: Lab of Fish Ecol. and Evo., BRCAS
Author (Lacepède, 1802) Depth 10 - 400M
Chinese 雙線舌鰨 Poisonous Fish No 
Family_Chinese 舌鰨科 Economic Fish Yes 
Family F502 Cynoglossidae Edible Fish Yes  Chinese In Mainland China 雙線舌鰨 
Max Length 44 cm  Aquarium Fish No  Common Name 狗舌、牛舌、龍舌、扁魚、皇帝魚、比目魚 
Distribution in World India Ocean to West Pacific Ocean   Distribution in Taiwan West 
Habitats Deep Sea、Benthos、Estuary、Fresh Water、
Holotype Locality China 
Synonyms Achirus bilineatus, Arelia bilineata, Arelia diplasios, Arelia quadrilineata, Cynoglossus bilinetaus, Cynoglossus diplasios, Cynoglossus quadrilineata, Cynoglossus quadrilineatus, Cynoglossus quinquelineatus, Cynoglossus sindensis, Plagusia quadrilineata   
Reference 臺灣魚類誌(沈等, 1993);中國動物誌-鰈形目(李&王, 1995)  Lacepede, B. G. E. 1802 沈世傑 編 Shih-Chieh Shen ed. 1993 李思忠, 王惠民 1995 
Specimen List ASIZP0061732. ASIZP0061733. ASIZP0063522. ASIZP0065152. ASIZP0072237. ASIZP0072238. ASIZP0074681. ASIZP0074682. ASIZP0076058. ASIZP0076149. ASIZP0076150. ASIZP0079034. ASIZP0079163. ASIZP0079257. ASIZP0079303. ASIZP0700233. ASIZP0800839. ASIZP0804832. ASIZP0804833. ASIZP0807066. ASIZP0807067. ASIZP0900168. ASIZP0900169. ASIZP0910839. ASIZP0914832. ASIZP0914833. ASIZP0917066. ASIZP0917067. NMMSTP01564. NTUM00025Paratype. NTUM02078. NTUM05110. NTUM05111. NTUM05112. NTUM05114.  
Barcode2015-10-23,Chia-Hao Chang,CO1,% 2015-11-01,Yu-Ming Shih,CO1,100% 2015-11-01,Yu-Ming Shih,CO1,100% 2015-11-01,Yu-Ming Shih,CO1,100% 2015-11-01,Yu-Ming Shih,CO1,100% 2016-01-27,HAN-YANG,CO1,100% 2016-01-27,HAN-YANG,CO1,100%
Common Name Twoline tonguesole; Two-lined toungesole; Tonguefish; Fourline tonguesole; Four-line tonguesole; Fourlined tonguesole 
Redlist Status NL Not in IUCN Redlist     
Characteristic Dorsal-fin rays 110-120; anal-fin rays 85-95; caudal-fin rays 11-12. Eyed side brown with an irregular dark blotch on gill cover, blind side white. Blind side with 2 lateral lines. Body elongate, its depth 3.45 to 4.55 times in standard length. Eyes with a small scaly interorbital space. Snout rounded. Rostral hook short. Corner of mouth reaching posteriorly beyond lower eye, nearer to gill opening than to tip of snout. Midlateral-line scales 88 to 96. Scales ctenoid on eyed side of body. Cycloid on blind side. Scale rows between lateral lines on eyed side of body 13 to 16.
habitats Inhabits muddy and sandy bottoms of continental shelves. Feeds mainly on benthic invertebrates. 
Distribution Indo-West Pacific: off Pakistan, the west coast of India and Sri Lanka, Indonesia, the Philippines, Japan, and the north and east coasts of Australia. Taiwan: West. 
Utility Commercial fishery species. Utilized as a food fish.