mccrabs. frogs are cool but are social animals and do better in groups of four. they are also bottom eaters. they have a tough time finding food and need to be with top feeding fish as they eat food off the bottom. theyre pretty shy and need places to hide during the day as they are light sensitive. i feed mine frozen shrimp. i put it in some water in a cup then drop it in and the frogs wont eat it unless it is moving. they have a hard time locating food when it's not wriggling or moving. they will skim off the top if they see something wriggling up there but will be less inclined to do this if you have larger fish like your bala and red tail. they also prefer sand over gravel and like live plants.