Isolate and try different food.
When I had my DP, she didn't eat anything for the first few days and she was terribly skinny. I tried everything, but the only thing she ate was snails. I used a tong to hold the snail during feeding. Everyday for the first few days, I held the snails with a tong. Eventually they associated the tong with feeding time. I easily got her to eat raw shrimp, so I could medicate her food.
First isolate and then you can see what each will eat.
And again, please make sure you're meeting all requirements for keeping DPs. I remember reading a similar scenario, but that person had 2 DPs in a 5g tank. You have to assume that the problem could be not meeting requirements, or else you introduce many variables to why your DP is not eating or not behavior properly.
When I had my DP, she didn't eat anything for the first few days and she was terribly skinny. I tried everything, but the only thing she ate was snails. I used a tong to hold the snail during feeding. Everyday for the first few days, I held the snails with a tong. Eventually they associated the tong with feeding time. I easily got her to eat raw shrimp, so I could medicate her food.
First isolate and then you can see what each will eat.
And again, please make sure you're meeting all requirements for keeping DPs. I remember reading a similar scenario, but that person had 2 DPs in a 5g tank. You have to assume that the problem could be not meeting requirements, or else you introduce many variables to why your DP is not eating or not behavior properly.