Sometimes that works, and sometimes it doesn't.

Aint fish psychology fun :-)

I had a pair of clarky clowns. I decided to add a
smaller one. Then there was the bigger one, medium
one, and the smaller one (just added). The medium
one did not like the smaller one at all, and was
very agressive to it. The bigger one (female) did
not have any problem with the smaller one. As time
went on, the big one started liking the smaller one,
and the medium one was getting more and more
agressive towards the smaller one, then the bigger
one started really liking the smaller one, and was
chasing the medium one away, and then eventualy
killed the medium one, and paired up with the
smaller one.

I like blue fined damsels, they get big and dark
dark blue. People that have two of them in a tank
will usually have problems with them picking on each
other, and the other tank mates, but often when they
remove one of them, everything is fine.

There are just so many factors that determine how
well fish will get along, including individual
temperament.

Wayne Sallee
Wayne's Pets


Gill Passman wrote on 7/3/2007 2:19 PM:
I might be being simplistic here but why not replace the losses and
maintain the school as presumably they have already been factored into
the stocking equation? I can see how a solitary fish might turn on it's
tank mates. Obviously, introducing adult chromis into the mix might end
in tears with a potential competition to be alpha fish but surely there
wouldn't be so much of an issue with adding smaller fish into the school
that will naturally take their place at the bottom of the pecking order?