Why Do Dead Fish Float?

A red tide of toxic algae is killing fish along the Florida coast - Vox

Germany: No single cause for massive Oder River fish die-off

Thousands of dead fish float to banks of Rouge River in Detroit - Curbed Detroit

Dead fish floating hi-res stock photography and images - Alamy

Hundreds of dead fish appear as ice melts off Wascana Lake

Frontiers Dead Cetacean? Beach, Bloat, Float, Sink

Why do fish float upside down when they die? And why don't they sink? - Quora

How do trillions of fish die from aging? Why do we never see them die? - Quora

Why don't fish swim upside down? - Quora