give it time. might be due to stress. my red tail payara only started eating on the 5th day
man, that filter....... you need to upgrade the filtration. that internal filters not going to cover up 4 GTFs
Iv fished for these and kept them, You need relatively fast moving water they always in fast moving streams that's how they hunt. Don't worry about feeding they take long to adjust keep the light off too.
I agree with the guy above in saying you to stop messing with the tank. That's just going to stress the more. I think that filter is fine the size they are now. If your gona add a lot of live feeders I would upgrade. Keep an eye on your nitrate levels an they should be fine.
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