I'm assume it's because they are wild, they are not used to eating pellets or flakes...what can I do? They're sooooo shy, they hide in the very back of the tank even though it's planted with a bunch of swords and crypts in a 20g L, getting driftwood to make it a bit more dense. I did see I may have to feed live worms? Which is difficult for me to get right now because I'm not going out to protect my 75 year old dad. Any advice thank you <3