What are aussies?The eggs you can buy are generally a good deal. It really depends on what you want. You hatch them in a different container other than your tank. Once the fry get big enough you could place them in your tank. My experince with killies is similar to the other persons. The tend to be really nippy and bossy. The are not good tank mates. I do hear the rice fish are far less aggressive. You could also try Aussies seeing that they have the briliant color of most killies.