裴氏金线鱼的重新描述及其与近似种横斑金线鱼的形态学比较(英文)

REDESCRIPTION OF THE NOTCHEDFIN THREADFIN BREAM NEMIPTERUS PERONII (VALENCIENNES, 1830) FROM SOUTHERN COASTAL AREAS OF CHINESE WATERS

裴氏金线鱼和横斑金线鱼是金线鱼属中 2 种重要的经济鱼类,广泛分布于我国的东南沿海及印度太平洋海域。由于这 2 种金线鱼外部形态十分相似,导致其分类鉴定非常困难。尽管过去有些学者曾经对它们分别进行过形态描述,但是目前文献中仍存在许多同物异名及鉴定错误,特别是在中国这 2 种鱼类的命名和鉴定始终未能形成统一的共识。本文对裴氏金线鱼和横斑金线鱼进行了形态学比较研究,发现裴氏金线鱼和横斑金线鱼在体型、体色、背鳍及鳃弓的形状等特征上存在明显差异。金线鱼属是我国重要的渔业种类,研究它们的形态分类学特征并进行准确的物种鉴定,对该属鱼类单一种类的资源评估和资源保护具有重要意义。

A redescription is here given for the notchedfin threadfin bream Nemipterus perronii （Valenciennes, 1830） whose taxonomy is still poorly understood in Chinese literatures. Its unique diagnosis is： snout short, obtusely rounded; suborbital moderately deep with a straight lower edge and a slightly rounded posterior end. Dorsal fin with a deeply notched interspinous membrane and elongated spines. Pectoral fin short, falculate, not reaching to near level of anus. Pelvic fins moderately long, reaching to level of anus. Caudal fin forked with its upper lobe pointed, but not forming a filamentous extension. This species is superficially similar to N. furcosus, but differs from it in body shape and coloration, and details in the head-associated structures.