You’re staring at your aquarium. It’s late. Everything is quiet. And there’s your fish, floating calmly, fins moving slowly, eyes wide open. Are they... asleep? Or just zoning out? Fish don’t come ...

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 ...

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 ...

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 ...