I have ADF's and they are better off with froggie friends..I have a 5gal tank with two in and they share it with three friendly fish. I have also put a young sucking loach in there today..They are good for keeping the tanks glass clean etc.
I feed mine on bloodworms which I defrost in a net over a jug and then drop them into the tank...They like the blackworms too and now and again the white ones. I also give them tubifix worms..all these are frozen and I just defrost them .
I have some bog wood in the tank and its shaped so they have a hiding place underneath it. Also a mixture of live plants, your local shop will recomend some for you..AFD's have soft little bodies so no sharp edges should be on the things you place in the tank...
Good luck and lots of fun!