Various fish can be found in the cool and clear rivers here , including several species of trout , sweetfish , minnow and carp 在清澈的河水中，生长着真鳟、鳟鱼、香鱼、雅罗鱼、鲤鱼等，是这里代表性的河鱼。
Captive breeding and release is one of the measures being used to safeguard numbers of a fish that is much prized by anglers 美国西海岸河流的虹鳟族群被美国渔业局和野生生命部门列为受到威胁和遭到危险的族群。
Rainbow trout swim in colorado ' s beautiful streams and rivers , and fly - fishermen flock to those streams to catch them 虹鳟穿梭在科罗拉多州美丽的小溪和河流中，采用西式毛钩钓法的钓客纷纷前往那些溪流钓这些虹鳟。
Steelhead populations in rivers along the us west coast are listed as threatened or endangered by the us fish and wildlife service 美国西海岸河流的虹鳟族群被美国渔业局和野生生命部门列为受到威胁和遭到危险的族群。
Salmon , brown trout , char , pollan and eel all occur naturally and other varieties such as pike , roach and rainbow trout have been introduced from outside 鲑鱼、斑鳟、红点鲑、爱尔兰白鲑和鳗鱼都是天然品种，其它品种如梭鱼、石斑鱼、和虹鳟鱼，则是从外海引进的。
The oregon state team had previously shown that first - generation captive - reared steelhead were just as successful reproductively as their wild - reared relatives , producing just as many young 奥勒冈州的团队先前证明了第一代人工养殖的虹鳟与野生虹鳟一般，产下后代的数量相当。
The result showed that the recombinant rainbow trout growth hormone expression by yeast y33 ( pmargh16 ) had biologic activity , and been absorbed by fish intestine to enhance the growth of the fish 结果表明，酵母胞内表达的虹鳟生长激素具有生物活性，能够经口服被鱼体肠道吸收，对罗非鱼具有明显的促生长作用。
