Instead, fish reared in high-density situations may learn that conspecifics are to be viewed as competitors, rather than as potential sources of adaptive information.

"相反，在高密度情况下饲养的鱼类可能会了解到，同种物种应被视为竞争者，而不是适应性信息的潜在来源。

youdao

In the case of the similar stocking density (mantissa), the large-sized fish played a distinct role in increasing capital gains rate of pond productivity.

在放养密度(尾数)近似的情况下，大规格鱼种对增加池塘生产力资金增益率有显著作用。

youdao

Nutrients in the ponds did not increase with the growth of fish, feeding and discharge, which indicated that the self-cleaning mechanism still support the cultured density.

在养殖周期内密养池塘中的营养物质并没有随鱼的生长、摄食量和排泄量的增加而逐渐增加，说明池塘的自净机制可以支持当前的放养量。

youdao

In recent years, problems have fouled acquaculture's reputation: pollution from waste runoff, high disease and parasite rates due to a high density of fish and the uptake of industrial chemicals harmful to humans have combined to make fish less healthy to eat.

FORBES: Magazine Article

Japanese researchers will now study how the bone density of the Medaka fish has changed over time, helping them understand similar changes that occur in human astronauts.

FORBES: Dragon Returns To Earth With 'Space Fish,' Toothpaste Research