I have just bought 2 baby convict cichlids, a male and a female. I have a community aquarium with an already supposedly aggressive fish in there (demasoni). He gets on fine with the other fish in the aquarium because I got him when he was young, this obviously gave him the chance to accept his surrounding tank mates better. After a few scuffles with the new cichlids everything settled down and the convicts don't seem to be aggressive at all. However, I came back today to find my two silvertip tetras dead with half their fins missing. No other fish where even touched, even the similar tetras in the tank. I presume it was the convicts who did this but why only to the silvertips? Should I get rid of the convicts?