Koeda Keita, Teramura Akinori
National Museum of Marine Biology Aquarium, 2 Houwan Road, Checheng, Pingtung 94450, Taiwan Present address: Kuroshio Biological Research Foundation, 560 Nishidomari, Otsuki, Kochi 788-0333, Japan.
Zootaxa. 2019 Dec 4;4702(1):zootaxa.4702.1.7. doi: 10.11646/zootaxa.4702.1.7.
The rare squaretail Tetragonurus pacificus Abe 1953 was described on the basis of a single poor-condition specimen obtained from the stomach of a yellowfin tuna collected from west of the Solomon Islands. A fresh specimen of T. pacificus was recently collected from southwestern Taiwan and its morphology and the fresh coloration are herein described in detail. In addition, a juvenile specimen collected from the southern Pacific Ocean was found in the museum collection. The species is characterized by dorsal-fin spines 10-11; longitudinal scale rows along body axis 72-80; and predorsal scales 17-20. The present specimen collected from off southwestern Taiwan represents the northernmost record of the species from the Pacific Ocean.
稀有的太平洋方尾鲳（Tetragonurus pacificus Abe，1953年）是根据从所罗门群岛以西捕获的一条黄鳍金枪鱼胃中取出的唯一一条状况不佳的标本描述的。最近在台湾西南部采集到了一条新鲜的太平洋方尾鲳标本，本文详细描述了其形态和新鲜的体色。此外，在博物馆馆藏中发现了一条从南太平洋采集的幼体标本。该物种的特征为：背鳍棘10 - 11根；沿身体轴线的纵向鳞片列72 - 80列；背鳍前鳞片17 - 20枚。从台湾西南部近海采集的本标本代表了该物种在太平洋最北的记录。
