Pempheris vanicolensis, the Vanikoro sweeper or greenback bullseye is a species of Indo-Pacific fish from the family Pempheridae, the sweepers.
Pempheris vanicolensis has a compressed body which is deepest at the origin of the dorsal fin, before it tapers markedly towards the tail, mainly on the ventral side, with a narrow caudal peduncle.[1] It normally has a greenish sheen over the back and most of the head. The anal fin shows an obvious black margin, the tip of the dorsal fin is black, and the pectoral fins are yellow lacking any black markings. The body depth is 2.2-2.4 times the standard length and it grows to up to 20 cm in total length. The dorsal fin has 6 spines and 9 soft rays while the anal fin has 3 spines and 31-43 soft rays.[2]
Pempheris vanicolensis has an Indo-Pacific distribution but the precise distribution is subject to some controversy. The distribution of P. vanikolensis sensu stricto is from the Andaman Sea east through the Malay Archipelago to New Guinea and the Solomon Islands where the type specimen was collected at Vanikoro.[1]
Pempheris vanicolensis occurs in shallow water, normally no deeper than 100m, in tropical and subtropical seas often on coral reefs.[3] It is the host of the intestinal nematode Rhabdochona Indiana.[4] It is found in schools in and around sheltered rocky and coral reefs. It shelters under ledges, in caves, harbours and shipwrecks during the day. It feeds on zooplankton foraging high in the water column during the night.[5]
Pempheris vanicolensis was named in 1831 by the French zoologist Georges Cuvier from specimens collected in Vanikoro in the south west Pacific Ocean. It was thought to have a wide distribution from the Red Sea to the Solomon Islands and even into the Mediterranean as a Lessepsian migrant but recent work has shown that it does not occur in the Red Sea and that records of this species in the western Indian Ocean are misidentifications of related species.[1]
Pempheris vanicolensis, the Vanikoro sweeper or greenback bullseye is a species of Indo-Pacific fish from the family Pempheridae, the sweepers.
Pempheris vanicolensis Pempheris generoko animalia da. Arrainen barruko Pempheridae familian sailkatzen da.
Pempheris vanicolensis Pempheris generoko animalia da. Arrainen barruko Pempheridae familian sailkatzen da.
Pempheris vanicolensis is een straalvinnige vissensoort uit de familie van bijlvissen (Pempheridae).[1] De wetenschappelijke naam van de soort is voor het eerst geldig gepubliceerd in 1831 door Cuvier.
Bronnen, noten en/of referenties
黑緣擬金眼鯛，又稱黑緣單鰭魚，俗名三角仔、刀片，為輻鰭魚綱鱸形目擬金眼鯛科的其中一個種。
本魚分布於印度西太平洋區，包括東非、馬達加斯加、模里西斯、塞席爾群島、馬爾地夫、紅海、阿曼灣、阿拉伯海、斯里蘭卡、印度、安達曼海、泰國、馬來西亞、菲律賓、越南、印尼、日本、台灣、中國沿海、新幾內亞、所羅門群島、澳洲等海域。
水深1至30公尺。
本魚體呈棕色，頭部及背部顏色較黑，旗下顏色較淡或略帶銀色，鱗片上多少有些黑點。體高呈卵圓形，側扁，尾柄較細長，臀鰭基底甚長，大於背鰭機抵償3.2倍。體被圓鱗，眼大，下頜較突出。側線完整，由鰓蓋外緣延伸至尾鰭末端，側線上方有鱗列6至7列。背鰭末梢呈黑褐色，胸鰭基底無黑斑或黑帶。臀鰭前部末梢及尾鰭上亦呈褐色。背鰭硬棘6枚、軟條9枚；臀鰭硬棘3枚、軟條31至43枚。側線鱗片數60至65枚。體長可達20公分。
本魚棲息在珊瑚礁區，常成群活動，屬夜行性魚類，肉食性，以小魚及小型無脊椎動物為食。
體型特殊，適合做觀賞魚，亦可食用，一般煮清湯。
