It doesn't make sense in any world though. It's not that it has to be 100% correct, this just doesn't make sense, and it absolutely matters. I can see how the content is good but it still really bothers me and needs to be changed.

Something like:

"The meaty insides of a CORPHISH's claws can be boiled down and consumed for their high protein content. For this reason, this Pokemon is mass-raised to huge sizes on aquatic farms."