这些鱼类分为4个主要生态类型，包括河口性鱼类、近海鱼类、江海洄游型鱼类和淡水鱼类。
These fish could be categorized into four types, including estuarine fishes, marine fishes, diadromous fishes and of freshwater fishes.
黄鳝是我国重要的淡水鱼类。
Monopterus albus Zuiew is a important freshwater fish in our country.
一种东半球鲃属或须鲃属及有关科属的淡水鱼类。
Any of various Old World freshwater fishes of the genus Barbus or Puntius and related genera.
主要产品：银鱼、蚬肉、活蚬、蟹、青虾、淡水鱼类。
在实验室条件下，研究了酸性水对几种主要淡水鱼类的毒性影响。
Under laboratory conditions, the toxicity of acid water on several major freshwater fishes were studied.
锯脂鲤属的有着锋利牙齿的水虎鱼是和纳氏锯脂鲤是世界上最残忍的淡水鱼类。
The razor-toothed piranhas of the genera Serrasalmus and Pygocentrus are the most ferocious freshwater fish in the world.
可以想象广西有着充沛的淡水鱼类资源，但对这里的研究还不是很多。
Thus the province has a very rich freshwater fish resource; however the area is poorly studied.
实验发现海水鱼类较淡水鱼类甲醛本底含量高，鱼雪鱼类甲醛含量比其它品种高得多。
We found the amount of instinct formaldehyde of seawater fish was higher than water fish.
除此之外，还有丰富多彩，分布世界各地的各种鱼类以及各种濒临灭绝的珍稀淡水鱼类。
Besides, there are rich and colorful, around the world of fishes and various endangered rare freshwater fish.
本试验为从淡水鱼精巢中摸索较为简易的提取DNA方法，为综合利用淡水鱼类资源开辟新途径。
It is a simple method for extracting DNA from fresh-water-fish's spermary. Itwill open up a new way for using the whole resource of fresh-water fish.
虽然作为淡水鱼类，三文鱼大部分时间都生活在海洋里，它们只在产卵期间回到淡水中，这种生活习性被称为溯河产卵。
Salmon spawn in fresh water, but in many cases, the fish spend most of their lives at sea, returning to the rivers only to reproduce. This lifecycle is described as anadromous.
梅丽莎·汤普森在25.94秒内写了这条短息：“锯脂鲤属的有着锋利牙齿的水虎鱼是和纳氏锯脂鲤是世界上最残忍的淡水鱼类。”
Melissa Thompson wrote the message "the razor-toothed piranhas of the genera Serrasalmus and Pygocentrus are the most ferocious freshwater fish in the world."
人类对鱼类耳石日轮的研究开始于七十年代初。到目前为止，国内外许多学者对多种海水、淡水鱼类的耳石日轮进行了研究。
The study on daily growth increments in otoliths of fishes was started since the early 19701s, in which many species of freshwater and Marine fishes were concerned.
在入侵物种名单中，有316种植物，101种海洋生物，44种淡水鱼类，43种哺乳动物，23种鸟类和15种两栖动物。
On the list of invasive aliens are 316 plants, 101 Marine species, 44 freshwater fish, 43 mammals, 23 birds and 15 types of amphibian.
《整体环境科学》的一篇论文显示，中国最大的淡水鱼可能已经在2005年至2010年间灭绝了。2019年9月，该论文的作者危起伟表示，一些专家认为这种一级保护鱼类已经灭绝。
A paper from Science of the Total Environment shows that the largest freshwater fish in China might have gone extinct between 2005 and 2010. Wei Qiwei, author of the paper, said in September, 2019, some experts supposed that the first-class protected fish had been extinct already.
属于淡水鲶鱼类，鱼身巨大，是马来西亚体积最大的淡水鱼。
This giant fresh water catfish is the largest Malaysian fresh-water fish.
银色小鱼北美鲤科，通常是银色的淡水鱼，尤指棱鱼属鱼类。
Any of numerous small, often silvery North American freshwater fishes of the family Cyprinidae, especially one of the genus Notropis.
银色小鱼北美鲤科，通常是银色的淡水鱼，尤指棱鱼属鱼类。
Any of numerous small, often silvery North American freshwater fishes of the family Cyprinidae, especially one of the genus Notropis.
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