We’re here at the lake to find out how different animals breathe. All animals need to take in oxygen and get rid of carbon dioxide, but they can do this in very different ways. Take fish ...

The way fish breathe underwater might seem mysterious compared ... then that would technically lead to suffocation and not drowning. However, fish do not have lungs, so there is no way for them ...

This species, with its many varieties, is the most common betta fish found in aquariums and pet stores ... bettas have evolved to breathe air at the water’s surface. This ability develops ...