Scientific Name
Doryrhamphus japonicus  
Doryrhamphus japonicus日本矛吻海龍
by: Lab of Fish Ecol. and Evo., BRCAS
Author Araga & Yoshino, 1975 Depth 0 - 25M
Chinese 日本矛吻海龍 Poisonous Fish No 
Family_Chinese 海龍科 Economic Fish No 
Family F295 Syngnathidae Edible Fish No  Chinese In Mainland China 日本矛吻海龍 
Max Length 8 cm  Aquarium Fish Yes  Common Name 日本海龍、海龍 
Distribution in World North West Pacific Ocean   Distribution in Taiwan South、Greeb IS. 
Habitats Coral、Coastal  Holotype Locality Rocky reefs near the mouth of Tanabe Bay, Wakayama Prefecture, Japan 
Synonyms Doryrhamphus melanopleura japonica   
Reference 臺灣魚類誌(沈等, 1993);Fishes of Japan(Nakabo, 2002);Fishbase(2005);The Live Marine Resources of the Western Central Pacific, Vol.4(FAO,1999)  沈世傑 編 Shih-Chieh Shen ed. 1993 Carpenter, K. E. etc. 1999 Nakabo T. 2002 
Specimen List ASIZP0056242. ASIZP0066992. NMMBP03124. NMMBP05649. NMMSTP00684. NTUM03811.  
Common Name Pipefish 
Redlist Status NL Not in IUCN Redlist     
Characteristic Body typically slender and elongate, without scales, encased in a series of bony rings. Snout with 1-5 dorsolateral rows of spines on each side median dorsal ridge, pouch flods present in adult males. Superior trunk and tail ridges discontinuous; inferior trunk ridge ends on anal ring; lateral trunk ridge confluent with inferior tail ridge. Median dorsal snout ridge low to moderately elevated, entired; opercle usually with a complete longitudinal ridge; scutella without longitudinal keels; without dermal flaps. Principal body ridges with one spine on eacg side. Males without one bony ventrolateral projection on the snout. Rings 19-20 + 14-15, darsal-fin rays 21-23, pectoral-fin rays 19-23. Side of trunk with a narrow dark stripe below the superior ridge.
habitats Inhabits small caves in sublittoral rocky reefs. Reported from tide pools to depths of at least 25 m offshore, but mostly seen in shallow depths. Often in pairs. Spawns from the end of May to September. An active cleaner that shares crevices with shrimps, 
Distribution Distributed in the northwest Pacific including Japan and Taiwan. It is found in sourthern Taiwanese waters; and Lyudao, southeastern Taiwan. 
Utility No commercial value.