What is wrong with the albino bichir, no appetite

Hi bros,

I have some trouble let the hungry albino bichir makan.

I got two albino bichir last time, living with aro. Both of them grow up from 4in to now abt 6in, mainly taking MP/SW.

But later i added some SD and blood red parrot and they are not able to eat for maybe one month. After that one of the bichir seems to go haywire.... swim like drunk and I caught it out to a separate tank. It is still not eating MP or SW. After one week or more it dies.

Now comes the second bichir. It still swim normally. I caught it out to a separate tank, hoping this guy can eat more outside and then can be released to the comm tank.

But for a few time it didn't touch the MP and SW, just see see and swim away.

Any bro has the similar experience before? Pls share. Thanks!