I fed mine in the evening. btw don't get freaked out if it looks like they are eating each other as in have another frogs leg in their mouth they occasionally moult and their buddies don't like to waste the nutrients and can't wait until it fully sheds. No one told me that and one day I walked in to find them in a very strange position. They are also partial to shrimp if they can get them:
(Click to enlarge)
OMG I'm so upset - I was just taking some lovely pics of my cuties when the BN came storming over the bogwood & did his hardest to kill one of the froggies. He actually chased it & was really violent. It was upsetting. I don't know where the little frog has gone, but the others are in danger now. I'm going to catch the BN & put him in a guppy breeding trap for now then see if the LFS will take him back tomorrow.