By tracking eye movements in zebrafish, researchers identified four different types of sleep, analogous to the complex sleep ...

It may sound too bizarre to be true, but the Amazon molly (Poecilia formosa), a fish that inhabits rivers, lakes, and swamps ...

Genetic analysis shows Baltic Atlantic herring evolved four key reproductive adaptations to thrive in low-salinity waters, ...

Japan is an island nation surrounded by the ocean. Fish are deeply familiar to us, yet they hold many mysteries and possibilities—from their ability to change sex depending on environmental conditions ...

Salmon are remarkable creatures that embark on one of nature’s most challenging journeys—swimming upstream against powerful currents to reach their spawning grounds. This extraordinary migration, ...

Marc Santos is a Guides Staff Writer from the Philippines with a BA in Communication Arts and over six years of experience in writing gaming news and guides. He plays just about everything, from ...

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Biology textbooks often describe asexual reproduction as a short-term solution. It can work for a while, but without genetic mixing, harmful mutations are expected to build up, diversity drops, and ...

You'll need to know how to cook fish porridge in Crimson Desert fairly early on, because the "Renee's Request" quest tasks you with making it. It's essentially a cooking tutorial, but with a few ...

When an Amazon molly says she doesn't need a man, believe her. Every single one of these small fish, found in freshwater streams in Mexico and Southern Texas, is female, and reproduces exclusively ...

Some deep-sea fish may be able to see light in a different way from most other vertebrates, according to a new study. The fish, found in the Red Sea, have what the scientists behind the new study ...

In a viral video on Instagram posted by Scienceboy, a dead fish with its body split open and its insides removed is placed into water, where it begins swimming around as if it were alive. This is not ...