Goldfish might look as if they are just swimming around with their mouths open, but what goes on inside those mouths is a lot like a high-efficiency industrial filter, according to mathematician ...

Filter-feeding fish accomplish a feat that human technologies cannot: species including goldfish, menhaden and basking sharks filter tiny algal cells or shrimp-like prey from huge volumes of water ...

Goldfish might look as if they are just swimming around with their mouths open, but what goes on inside those mouths is a lot like a high-efficiency industrial filter, according to mathematician ...