Buckets or bags should be clean and free of soap residue. Even small traces of chemicals can be harmful to fish. Avoid chasing fish around the tank. Use a soft net and slow movements to minimize ...

Where do you go when you’re a fish and you need a skincare treatment? Coral reefs contain natural “beauty salons,” lively social hubs of activity where fish “clients” swim up and wait to be serviced ...

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Natural boundaries, such as shallow riffles, may reduce fish movement in times of low river flow, but in a natural lowland ...

An Octopus cyanea hunts with a blacktip grouper on one side and a blue goatfish on the other. Octopuses don’t always hunt alone — but their partners aren’t who you’d expect. A new study shows that ...

A cleaner goby cleans a grouper in a Caribbean coral reef. These little fish clean much bigger fish of parasites and bacteria. Where do you go when you’re a fish and you need a skincare treatment?