i got a african dawrf frog a couple of days ago and it prety much stays at the bottom of the tank behind a big piece of diffwood not doing a lot i put live bloodworm in and freeze dried bloodworm in too but it wont eat. because the food doesnt sink and he stays at the bottom of the tank no food gets to him and he wont come to the suface to eat. what do i do? has any one had a problem like this? thanks for any help.