Scientific Name
Plesiops oxycephalus  
Plesiops oxycephalus尖頭七夕魚
by: ©Randall, John E.
Author Bleeker, 1855 Depth 0 - 15M
Chinese 尖頭七夕魚 Poisonous Fish No 
Family_Chinese 七夕魚科 Economic Fish No 
Family F344 Plesiopidae Edible Fish No  Chinese In Mainland China 尖頭鮗 
Max Length 6 cm  Aquarium Fish Yes  Common Name 七夕魚 
Distribution in World Australia   Distribution in Taiwan East、Tung Sa IS. 
Habitats Coral、Coastal、Lagoon  Holotype Locality Itoman, Okinawa I., Ryukyu Is., Japan 
Synonyms Plesiops oxycephalus okinawaensis   
Reference The Live Marine Resources of the Western Central Pacific, Vol.4(FAO,1999) 
Specimen List NTUM06421.  
Common Name Sharp-nosed longfin 
Redlist Status NL Not in IUCN Redlist     
Characteristic Body elongate, slightly compressed. Snout short. A single dorsal fin with XII spines and 7 segmented rays, with deeply incised fin membranes between the spines; anal fin with III spines and 9 segmented rays; pectoral fins with 19 rays; pelvic fins with I spine and 4 segmented rays; caudal fin rounded. Lateral line disjunct and in 2 parts, with a more anterior dorsal lateral line running near dorsal-fin base, a posterior lateral line running midlaterally onto caudal peduncle. Body pale(sometimes dark) with many irregular mottles, often congregated to form 6 to 8 bands; Preoperculum and lower 2/3 of operculum orang-colored; gill membranes blackish; two small black spots, at upper posterior border and behind center of eye. Fins brownish grey; dorsal and anal fins with narrow blue longitudinal lines; tips of dorsal-fin spines yellow; posterior of caudal fins with yellowish orange band.
habitats Found under corals in lagoons. Usually occurs in water shallower than 3 m on reefs, or in tide pools.  
Distribution Distributed in the Indo-West Pacific from the Ryukyu Islands to the western coast of Sumatra; east through the Solomon Islands and Vanuatu. It is very rare and only found in Lyudao, southeastern Taiwan.  
Utility No commercial value.