Ive caught them and hybrids in some of the rivers around here and they love anything that looks like a crawdad, I believe they are the hardest fighting bass pound for pound of the big 3 (Largemouth, Smallmouth, Spotted). The Hybrids are my favorite .....sorry ive never kept them in a aquarium. This is from a fishing site.
"Although considered the runt of the black bass family, the spotted bass maintains a chip-on-its-shoulder attitude, and when it schools up with its brethren, they become as vicious as a wolf pack pouncing on prey.
"They are not as much structure oriented as largemouths, which like to hang around a dock, lay-downs or stumps," Bassmaster Elite Series pro Brian Snowden expalined. "You will catch a lot of spotted bass out in open water or bare gravel points where there is really nothing there to hold them."
Their aggressive nature makes spotted bass easier to coax into biting if you can find them in the vast open spaces of reservoirs."