Do fish sleep? Even scientists have struggled to understand the process, but new research reveals how different species rest. Learn how to spot if your fish is napping. Many fish owners have tapped on ...

It's not unreasonable to ask, "Do fish sleep?" After all, when was the last time you actually saw one of these little swimmers taking a snooze? It's hard to tell when a fish is sleeping because they ...

Fish resting habits differ from land mammals. They reduce activity and metabolic rates, with unique sleep patterns among species. Environmental factors affect their sleep, and light influences their ...

A protective mucous cocoon surrounds this parrotfish as it sleeps in Australia's Great Barrier Reef. This layer of protection helps fend off predators so parrotfish can get a good night's rest.

Tom has a Master's degree in Journalism. His editorial work covers anything from archaeology and the environment to technology and culture. Tom has a Master's degree in Journalism. His editorial work ...

Five multiple-choice questions – set by children – to test your knowledge, and a chance to submit your own junior brain-teasers for future quizzes Rain starts off as water vapour gas in the air, joins ...

Zebrafish sleep just like humans according to new research which suggests the way we snooze evolved more than 450 million years ago. Scientists say our ancient fish-like ancestors developed ...