阿格利罗的团队发现，食蚊鱼最多可以分辨大到16的两个数字的大小，但前提是每个鱼群中鱼的比例大于2:1。
Agrillo's team found that mosquitofish can discriminate between numbers up to 16, but only if the ratio between the fish in each shoal was greater than 2:1.
我希望你是我的盘中鱼。
人就如湖中鱼。
如果在一个枯竭的生态系统中鱼的增长是每年5%，而渔业捕捞量达10%的话，渔业就会崩溃。
If fish in a depleted ecosystem grow by 5% a year and the catch expands by 10% a year, the fishery will collapse.
针对这种情况，亚马逊河沿岸的农民群众，在巴西境内也好，在秘鲁等邻国也好，纷纷成立合作社，以求控制捕鱼量，增加河湖中鱼的数量。
In response, peasants up and down the amazon, here in Brazil and in neighboring countries like Peru, are forming cooperatives to control fish catches and restock their rivers and lakes.
在大自然中，有的鱼以死鱼为食。
濒临灭绝物种的名单中列有将近600种鱼。
鱼是许多非洲人饮食中的主食。
这种鱼在自然生存环境中可以长到5磅重。
将鱼单独放置一周后，罗里再次将红色标志块放入鱼缸中。
After leaving the fish alone for a week, Rory placed the red Logo block in the tank again.
研究人员研究了不同种类的胭脂鱼的毒液基因中的蛋白质。
The researchers study the proteins in the venom genes of various species of colubrids.
将金枪鱼放在一个中等大小的碗中，然后用叉子将其切成薄片。
Place the tuna in a medium-sized bowl and flake it with a fork.
海洋鱼类中的汞含量也很高——尤其在体型较大的鱼类体内，如鲨鱼、金枪鱼和旗鱼。
Mercury levels are high in marine fish, too—particularly in larger species, such as shark, tuna, and swordfish.
他们看到，如果雌鱼吃了对虾——即使是在这个陌生的实验室环境中——雄性裂唇鱼也会惩罚或驱赶雌鱼。
They saw that the male cleaner fish — even in this unfamiliar lab setting — would punish or chase away the female fish if the females ate a prawn.
鱼生活在水中。一个处于陌生或不舒服环境中的人可能会感觉像一条离开水的鱼。
Fish live in water. A person who is in a strange or uncomfortable environment may feel like a fish out of water.
我们假设这些鱼中的其中一组具有遗传的灵活性，可以发现并取食另一种未被其他鱼利用的资源。
Let's suppose that a group of these fish had the genetic flexibility to discover and feed off another resource that was unused by the other fish.
如果我们现在不采取行动，到2050年，海洋中的塑料将比鱼还多。
If we didn't act now, there would be more plastic in the ocean than fish by 2050.
在互利共生的约束中，小丑鱼一生与宿主海葵生活在一起，很少游出超过它们几米的地方。
Bound in an alliance of mutual benefit, clownfish spend their entire lives with their host anemones, rarely straying more than a few yards from them.
良好的记忆力可以让鱼在自然环境中更安全。
“Yulelogs 真的很喜欢他的生日蛋糕。”一名工作人员说，“这对他来说也是一个挑战，因为他需要思考一下如何把鱼从蛋糕中取出来！”
"Yulelogs really loved his birthday cake," a worker said, "It's also a challenge for him as it requires a bit of thinking on how to get the fish out of the cake!"
在那项研究中，吸烟者在充满烟味并混杂着臭鸡蛋或鱼的混合气味的房间里待上一晚上后，他们会减少吸烟。
In that research, after spending a night in a room full of cigarette smell mixed with rotten eggs or fish, smokers use fewer cigarettes.
在这项研究中，加拿大麦科文大学的研究人员训练了一种叫做非洲慈鲷的鱼，让它们游到鱼缸的特定区域获取食物。
In the study, researchers from Mac Ewan University in Canada trained a kind of fish called African cichlids to go to a certain area of their tank to get food.
鲶鱼是一种生活在污泥河流中的鱼。
八目鳗类鱼有中肾，并且通常是其前肾的新生物。
Hagfish have a mesonephric kidney and are often neotenic of their pronephric kidney.
他从河里已叉中五条鱼了。
并不是每个人都能在海洋中与鱼一起游泳的，但人们以另外一种方式享受水下的生活——参观水族馆。
Not everyone can swim with fish in the ocean. But they can enjoy underwater life in another way — by visiting an aquarium.
你可以从水槽中挑选鱼、贝(8元)、虾(48元)还有甲鱼。
You can pick the fish, shellfish (RMB8), shrimp (RMB48) and turtles from the tank.
在永远流淌的小溪中，鱼才能生存和长大。
宣称欧米伽脂肪酸只在鱼中才有绝对是谎言。
Claims about omega fatty acids being found solely in fish are absolute lies.
宣称欧米伽脂肪酸只在鱼中才有绝对是谎言。
Claims about omega fatty acids being found solely in fish are absolute lies.
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