There are many reasons why researchers are concerned about endangered species. After all, these species went extinct in just ...

I love eating caviar, preferably off a mother-of-pearl spoon and with either a glass of champagne or a chilled vodka shot. If ...

北美白鲟确实是北美体型最大的淡水鱼之一，该物种体长超3米司空见惯，2.4米甚至算是小体格了，北美白鲟最大可达6米长！体重方面，有记录的最大北美白鲟是于1898年在美国爱达荷州斯内克河捕获的，重达682公斤。