它们主要以小型鱼类为食，其次为水栖昆虫的幼虫等。
They are mainly small fish for food, followed by aquatic insect larvae, and so on.
槌头双髻鲨是凶猛的猎手，以小型鱼类、章鱼、鱿鱼和甲壳类动物为食。
Hammerheads are aggressive hunters, feeding on smallerfish, octopuses, squid, and crustaceans.
常见的大约有七种，多为小型鱼类，生活于底质为沙石的清流中。
There are seven common kinds, most of which are small ones, living in clear waters with sand and stone at the bottom.
研究发现，这三种小型鱼类在入侵到抚仙湖后，其生活史对策出现了一系列的变化。
It was found that there had been some marked changes in these fishes' life-history strategies after they were introduced to Lake Fuxian.
大白鲨的嘴巴和牙齿是一副功能强大的捕猎工具：猎物从小型鱼类到大型海洋哺乳动物。
Great whites have jaws and teeth that are perfect for a powerful chomp on prey ranging from small fish to large marine mammals .
虽然小型鱼类的数量正在上涨，人类有渐渐开始捕捉这些小鱼作为鱼粉等食物，克里斯坦森教授说。
While the number of small fish is on the rise, the little swimmers are also being increasingly sought after for use as fishmeal in human-run fisheries, Christensen said.
当中小型鱼类这样日益被耗尽时，更小的和迄今还没有商业价值的鱼类就会被细密的渔网捕捞。
Increasingly, as these small and middle-sized fish run out, smaller and hitherto commercially worthless ones are scooped up in fine-meshed nets.
结果表明坛子网的选择性能差，在捕捞小型甲壳类时，会混捕小型鱼类和经济幼稚鱼等大量副渔获。
The results showed that the selectivity of TanZi net was poor and TanZi net caught a great number of small young fishes while catching small crustaceans.
根据1997 ~ 2000年东海区底拖网渔业资源调查资料，分析和讨论了东海区小型鱼类的种类组成和季节变化。
According to the data selected from bottom trawl fishery resource monitoring in the East China sea from 1997 to 2000, the species composition and seasonal variation of small-sized fish were analysed.
“供应充足”的食物——玉筋鱼(sandeel)及其他小型鱼类——为那些近几年来一直难以养育小鸟的许多种海鸟的“鸟丁新旺”做出了“无私忘我的”贡献。
A 'plentiful supply' of food in the form of sand eels and other small fish seems to have contributed to successes for many species that have struggled to raise chicks in recent years.
鲨鱼以什么为食，主要是鱼类和其他小型海洋动物？
What do sharks feed on, mainly fish and other small sea animals?
这些小型的雌兽和雄兽很容易成为鸟类，浣熊，鱼类和海龟的牺牲品。
These small editions of mother and father are easy prey for birds, raccoons, fish and turtles.
科学杂志上的报道上称，埋葬地点显示阿拉斯加的古代居民除了觅食大型哺乳动物，也吃鸟类，鱼类和小型哺乳动物。
The burial site shows ancient residents of Alaska foraged for fish, birds and small mammals - as well as large game, reported the journal Science.
艾治汪惊奇地发现，燕鸥经常在北大西洋可以停留近一个月。 他推测燕鸥可能在这段时间捕捉一些鱼类和小型的甲壳类海洋生物，能量得到充足补充后再动身穿越热带地区。
Egevang was surprised to find that the birds often stop for a month in the open North Atlantic Ocean, probably to "fuel up" on fish and small crustaceans before setting off to cross the tropics.
法院判决截断运河的抽水，以便保护三角洲里的胡瓜鱼，一种小型的濒危鱼类。
Judges have curtailed pumping in order to protect the delta smelt, a small, endangered fish.
科学家本周五说，由于人类的过度捕杀，海洋中食肉性的大型鱼类越来越少，在过去一百年里只剩下小型鱼成倍繁殖。
Fewer big, predatory fish are swimming in the world's oceans because of overfishing by humans, leaving smaller fish to thrive and double in force over the past 100 years, scientists said Friday.
但是当它入驻新领地后，它会血口大开，吃掉能吃的所有食物，甚至将其他小型的鱼类竞争者赶尽杀绝。
And when it shows up? It will eat everything it can and probably drive competitive smaller fish extinct.
一些人养小型犬或猫作为自己的宠物，而另一些人则饲养各种鸟类和鱼类做为他们的宠物。
Some raise small dogs or cats as their pets while others raise various birds or fishes as their pets.
近年来，随着传统的主要经济鱼类资源的衰减，导致小型经济鱼类获得充分繁殖与生长的机会，其相对与绝对数量明显增加。
The decrease of main valued fish resource in recent years has resulted in the opportunity for full growth and reproduction of small fishes.
沙塘鳢属鱼类为东亚特有的小型淡水经济鱼类，中国产沙塘鳢属鱼类分类问题长期存在争议。
The Odontobutis are valuable small freshwater fishes restricted to the East Asia, but their specific validities and phylogeny has been controversial for a long time.
在屋顶建设一个蓄水池，有土壤贮壁结构，里面放些藻类、鱼类，形成小型生态系统以保证水质的新鲜。
A reservoir is built in housetop, have structure of wall of edaphic lay aside, some of alga, fish is put inside, form small-sized ecosystem with assuring water quality fresh.
黄颡鱼是广布于我国各江河湖泊的一种习见小型经济鱼类，生活水流底层。其头骨共有126块；
Pelteobagrus Fulvibraco is a species of small economic catfish dis- tributing all over the rivers and lakes of our country.
小型软鳍鱼类的一个大科；淡水鳉科小鱼； 花尾汤鲤； 剑尾蝽； 古比鱼。
Any of several small New World freshwater fishes of the genus Fundulus, related to the killifishes.
小型软鳍鱼类的一个大科；淡水鳉科小鱼； 花尾汤鲤； 剑尾蝽； 古比鱼。
Any of several small New World freshwater fishes of the genus Fundulus, related to the killifishes.
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