Well if you have 2 red zebras make sure one is a female and one is a male. and with 5 auratus you should have some females and males(you may have to get rid of excess males). Then you jsut have to wait untill they are mature. That is usually about 2"+(butsome like rusties can breed at 1"). Once they are big enough they will start to breed, and once they start you will son become over run with fry(if you choose to keep them)