Reblog from Google News: - a species of fish that farms algae has been found to farm shrimp as well, to help run their farm.
I found this account of a charming fish to be endearing. The fish farms both algae and shrimp, and it defends its shrimp farm from intruders and predators. https://theconversation.com/we-found-algae-farming-fish-that-domesticate-tiny-shrimp-to-help-run-their-farms-151615