I have a 26g now with two keyholes, a golden ram, a few serpae tetras,
rasboras and one yellow. I had two but one died a few weeks ago.
Most are juveniles. I'd like to get another lab for a "buddy".

First of all do I need another one(not interested in breeding), or
will this one be happy with it's tank companions. Was pretty shy, but
is now joining in with the others.

I think I have a female. If I did get a male will it upset the
"ambiance" of my tank?

TIA



Larry