Rare trophic eggs behind the success of snakehead fish?

Fish rarely feed their young. An exception are certain species of snakeheads whose offspring feed on trophic eggs provided by their parent. A new study shows that this exceptional adaptation developed in snakehead fish around ...

Goldfish found to have travel distance memory

A team of researchers at the University of Oxford has found via experimentation that goldfish use markings on the floor below them to measure how far they have traveled. The findings are published in Proceedings of the Royal ...

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