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。
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。
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。
They are omnivorous and play a key part in the ecology of these rivers eating fish plants and insects but also acting as prey for dolphins, caiman and larger fish.
杂食性的水虎在这些河流的生态环境中扮演的非常关键的角色，它们在扮演昆虫、鱼的猎食者的同时也被河豚、鳄鱼和其他大型鱼类所猎食。
They are omnivorous and play a key part in the ecology of these rivers eating fish plants and insects but also acting as prey for dolphins, caiman and larger fish.
杂食性的水虎在这些河流的生态环境中扮演的非常关键的角色，它们在扮演昆虫、鱼的猎食者的同时也被河豚、鳄鱼和其他大型鱼类所猎食。
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