go with more then 3 or just 1. They can either get along well or not at all. Theyre awesome fish, grow slow, and can get big.
JUST DONT FEED ANY LIVE FEEDER FISH! I never did, but i went icefishing and had some shiners left over and i decided to feed them to my dats.. well now my dat has a parasite of some sort.
Theyre awesome fish, how big of a tank u have?