Your fish look nice, but they will not be liking that tank for long- is it a hex? They need some room to swim, don't stop feeding them feeders, either- only problem is those goldfish are dirty, lots of waste ends up in the substrate which those cool little bass will find unappealing. Four 3-4" bass need a 100 gallon tank at least to be happy, and that is still cramping their style. I know it is illegal in most states (for sure in CA) to keep game fish and such, but I can't help myself. Just make sure you take real good care of them, the fact that you are asking here is cool. They will probably eat frozen brine shrimp, you might try it. My calico loves them, when I can't get him guppies. Plus a little variety in their diet is good. Worms are probably a really good staple diet, as others mentioned. And crickets, if you got 'em. Probably not cheese sandwiches, mine hated those. They made the water cloudy too. What is the water temp you have, curious about the smallie- I would love to have a smallie in a tank. LIttlel dads can be found in almost any bit of water, not sure where you are located, but the little dads would be epic for your bass- I have a red tail cat, amazon style, he can't get enough dads.