So I've done some research and everyone recommends them for small tanks, but everyone also says they're incredibly hard to find. My situation is I have a 180 and I'm not quite sure what I want to do with it, so I'm just exploring options. Basically, I'm wondering how difficult it actually is, any advice you guys have on finding them, and what the cost of the fish would be? Also, obviously, if it's a good idea lol.