＊＃！＆＊Is anyone here an experienced aquarist?

Is anyone here an experienced aquarist?
I have a pair of bala sharks, and they are getting a little too big for the tank I have now. They don't have enough of their own territory in my tank now. Therefore I have to send one of them them away to someone who can take good care of them. I have a 55 gallon tank and there are other fishes in the tank too. The bala sharks I have are about 6 inches long now, both are male. So if you are an experienced aquarist, reply me please. thanks! :em16:  :em16:  :em16: