I wonder when we will see nuts in our koi feed?
 
Thanks to researchers at the Agricultural Research Service, a new feed ingredient made from tree nuts is available to fish farmers.
As the aquaculture (fish or shellfish farming) industry grows, so does the need for fish feed that's not dependent on the stagnant supply of fish meal made from captured marine fish protein and oils.
https://federallabs.org/news/fish-go-nuts-over-new-feed-ingredient