Koi Fish Information Centre

Sounds like that would be best addressed to each food manufacturer.
If it’s Chinese made, algae meal could be melamine. LOL
I’m looking at my pack of Hikari Algae Wafers and there’s lots of “meals” (fish meal, dehydrated alfalfa meal, wheat germ meal, dried seaweeds meal, krill meal) and lots of other non-meal goodies but no algae […]

I believe, traditionally, “meal” refers to a ground up or finely grained product…usually grains…
From the Miriam Webster dictionary…
Main Entry: fish meal Function: noun Date: 1854
: ground dried fish and fish waste used as fertilizer and animal food
(big ewww)
Main Entry: […]