They're a good top water fish, but not really active unless you're feeding them. Can go with anything as long as it doesn't maul them or fit in their mouth. Most of the ABFs sold in fish stores these days will eat flake or frozen but love live crickets. Be sure and ask a knowledgeable salesperson what they're feeding and how well they're eating. Look for ones with an even brown striping/mottled look, if they're too pale or too dark they're likely sick or very upset with the water conditions. They seem to get along fine with other top water dwellers, mine never bothered my killies and I've also kept them with young African cichlids in a 55gal. You can generally think of them as a permanently small arowana, so a tight fitting lid is essential since they are skilled jumpers.