Id also like to add that they take a while to grow, and it will show signs of maturity, so ull have plenty of time to upgrade. Korans are fairly hardy too. Wen I started out, and knew nothing of this, mine managed to survive in a tank with a LOT of ammonia that i didnt know about. I borught it back to the store though. That would be a great choice, just make sure u get a relativly small one, and it will have plenty of time to grow.