I have 4 Buenos Aires Tetras that I bought very young couple of months back. Now they are each almost 2 inches and nipping at other tankmates. I've ordered for a customised 30 gallon tank to keep these BAs separately. I've read they can be aggressive with the smaller tetras like Neon or Serpae too. Which other larger tetras can I keep in this new tank along with the BAs that I can expect to hold peace? Any suggestions or input would be appreciated.