We can be guilty of thinking that oxygen is a uniquely human need. While all land-dwelling animals breathe oxygen from the air, fish need oxygen too. Not only this, but fish can run out of oxygen, ...

Body mass and cell size are major factors in a fish’s ability to withstand temperature-dependent, low-oxygen environments. Fish worldwide are being plagued by larger and more frequent episodes of ...

Fish can drown. While it may not seem like it, fish do require oxygen to breathe; it’s just that they get what they need from the oxygen dissolved in water rather than in the air. Too little oxygen ...