Well, wonder no longer. The Daily Telegraph is here to answer life’s big questions and with the help of our friends at SEA LIFE Sydney Aquarium we think we’ve got this one sorted. Aquarium marine ...

Sleep in fish may look different from humans, but rest is essential for survival. Here’s what experts have to say about fish sleep. A protective mucous cocoon surrounds this parrotfish as it sleeps in ...

Sleep is one of the most essential parts of being human. Catching some Z’s is important for daily functioning. As adults, we've got to get in about eight hours a day, according to the Sleep Foundation ...

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 ...

Fish don’t have eyelids. They don’t curl up in beds or snore, so it’s easy to assume they just keep swimming forever without rest. But they do sleep—it just looks very different from how we do it.

An international team, led by Alexandra Grutter of the University of Queensland, has found that fish have developed mucous cocoons, akin to a mosquito net, to avoid being bitten by parasites in their ...

Scientists have hooked a fish that suffers from insomnia in their quest to understand the genetics behind sleep disorders. Even zebrafish - a common aquarium pet - can have a genetic mutation linked ...

Most of us have felt that the fish are asleep sometimes when we are on the water, but do fish actually sleep? Biologists say not exactly. They enter into a resting state, but so far as being totally ...