They can get around 10 inches so unless you have something bigger in mind, I wouldn't recommend getting one. Also they are predator fish. Those beautiful long barbells they have are used to detect their prey as they cruise around the aquarium. They will eat smaller fish, I know we had 2 and they ate 6 neons one night after we went to bed! Their mouths are HUGE in comparison to their size! They will eat regular fish food, ours loved freeze dried tubifex worms as well. If you decide to get some make sure your other fish are a good bit larger than they are.