Has anyone owner them? Know how hard they are to keep? I found a 10g top the other day in a box of some stuff my boyfriends mom gave us. A friend told me he would sell me a 10g tank for 5 bucks so I want to do something with it. I came across dwarf seahorses and wanted to know how hard they are to keep alive and if I can actually keep them in a 10 gallon. From what I've read all signs point yes but I thought I'd ask.