live in the same cages as salmon where they attack and eat parasitic sea lice. Only small numbers of farmed wrasse have so far been deployed in salmon farms, with the majority coming from the wild.

These are used to eat sea lice off the skin of salmon in the farm cages. Within the risks foreseen by the Norwegian firm is the possibility that its catching of cleaner fish will harm wild stocks ...

First thing's first. Sea lice aren't lice at all. They're tiny baby jellyfish, so small you can't even see them -- about the size of a grain of pepper. And just like their grownup counterparts ...

Expanding fish farming is one way to meet the demand of the world's growing population. Fish farms are known to experience outbreaks of sea lice that make their products unmarketable. But fixing the ...