question about 2 green terrors

  • We are currently upgrading MFK. thanks! -neo
The second fish could be a female or a sub-domiant male. As long as there is no real aggresion they should be fine together. I would think about getting rid of the sharks, if they are still small they'll be ok for a while but the get really big, too big for a 90.
 
It looks like you have a male and female. I have my male in a tank with 3 females and he breeds with all of them. The breeding female usually loses color and looks a little while the other two will sometimes get lines from being a little stressed. As long as your fish is eating and seems healthy otherwise you should be alright. What are the tank dimensions?
 
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