带鱼科为辐鳍鱼纲鲈形目的一个科。中国黄海沿岸部分地区（如青岛、日照等）亦称其为“鱽鱼”或“镰刀鱼”。

本科鱼类分布于全球温带水域。泳层面相当广，白天或晴天下潜，夜晚或阴雨天上浮。

The cutlassfishes are about 40 species of predatory fish in the family Trichiuridae (order Perciformes) found in seas throughout the world. Fish of this family are long, slender, and generally steely blue or silver in colour, giving rise to their name. They have reduced or absent pelvic and caudal fins, giving them an eel-like appearance, and large fang-like teeth.