A. The fish are found in an acidic swamp (酸性的煤炭沼泽) on the Indonesian island of Sumatra. Indonesian swamps are disappearing because of the unchecked development and farming. And several populations of the tiny fish have already been lost.
B. According to researchers, such acidic swamps was once thought to have few animals in, but recent research has discovered that they are homes to many unique creatures.
C. The fish has a translucent(半透明的)body and a head unprotected by a skeleton(颅骨).Mature females(成熟的雌性)grow to less than a third of an inch long.
D. Scientists say they have discovered the world's smallest known fish in Indonesia.
E. "This is one of the strangest fish that I've seen in my whole career,' said Ralf Britz, a zoologist(动物学家) at the Natural History Museum in London. "It's tiny and has these special fins(鱼鳍). I hope we'll have time to find out more about them before their habitat disappears completely."
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