Usually these cichlids will only pick on their own species but there
are always exceptions. I would not rule out the possibility of a
disease or water-quality problem. Once a fish shows signs of weakness
the others will attack regardless of species or size.

There are too many unknowns to make an educated guess since I have not
seen your tank or fish. So until you know if the fish died from
aggression or something else it would be a very good idea to keep a
close watch on the fish and look for signs of not eating etc.

--


Mark
http://www.cichliddomain.com


"The Madd Hatter" wrote in
message
e.rogers.com...
I have a 6" Scienochromis Fryeri in a 100 Gallon tank w/ similar
sized mbuna
and other fryeri, and several sun cats.. All has been pretty normal
in the
tank for a while. Today I saw this fryeri with fins all frayed and
stringy.
The body, which was quite brilliant blue, had turned mottled red and
green
in large spots. The fish was really struggling to swim. I removed it
promptly to a 40 Gallon recovery tank. I looked in on it tonite, and
it was
upside down on the gravel (not on its side) and breathing very
weakly. This
was not a "runt" in the tank. This fish has been fairly high onthe
pecking
order, and he isn't even the smallest of the fryeri... I don't see
any signs
of aggression among the other fish. I suspect the markings etc came
from
aggression, but the color seemed wierd. Its probably going to die
soon
enough, but I would like to diagnose the problem so I can take
corrective
measures now... most of the fish in the tank are my favorites.

Any suggestions?