Survey on the fishes of early life history stages is an important area to carry out the studies in fish ecology and fisheries biology.

鱼类早期资源调查是鱼类生态学与渔业生物学研究的重要手段之一。

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That change in chemistry has led to staggering alterations in the lake's ecology, causing precipitous drops in the Aral Sea’s fish population.

化学成分的改变极大地改变了湖区的生态环境，导致咸海鱼类数量剧减。

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In this fascinating book Helen Scales, an aptly named Marine biologist, explains the myth, biology and ecology of what the Victorians called "queer fish".

在这本有趣的书中，海伦-思卡尔斯(更恰当来说，她是个海洋生物学家)阐释了维多利亚时期人们口中“没人要的鱼”的传说、生物学原理和生态学原理。

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As recently as 50 years ago, the whitetip may have once outnumbered all the other big fish in the gulf, according to a paper published in Ecology Letters.

NPR: Study: Whitetip Shark Numbers Rapidly Dwindled

Polluted water increased health risks and harmed the ecology of the river, resulting in the deaths of large numbers of fish in "extreme cases", he told MPs.

BBC: Raw sewage in Thames 'a disgrace' - Labour MP