Are there freshwater varieties... or marine only?
Aside from that, from what i've heard, seahorses are ridiculously hard to care for. Extremely sensitive to changing water conditions. They seem to be a lot more work than most of us are accustomed to. Although they are fascinating. And if I were skilled and devoted enough, or even had the time to maintain a setup for them, I would in an instant. Who knows, maybe the marine section will be sing a lot more osf you in the future.