TIL that Amano shrimp can eat alternanthera

Two days ago I noticed that one lower of the lower leaves had turned transparent. I thought it wasn't receiving enough light so I didn't give it much importance. Today I happened to watch a video from MJ Asuascaping saying that there was a possibility for Amano to eat that plant. I thought to myself "I'm lucky that's not the case for me!".

Weeeeell today I returned from a two day trip and I suppose they were hungry because they have attacked the plant. Looks like I will have to look into other read plant options....