Remove the rocks and the agressive fish... Put the rocks back and add the
aggresive fish back a while later... Might work, but a better solution
would be to add more fish and leave less rockwork... That way they don't
have as much territory to latch on to. The size differences in your fish are
pretty high, so eventually you will have problems, no matter what you do..
Best thing would be to start a new tank and sort the fish by size....
"Indiana Jones" wrote in message
. ca...
Preamble:
77 gallons, lots filtration, water conditions all great. Crushed coral
substrate with lots of caves/rockwork.

1 Frontosa - 4-5"
1 Frontosa - 1.5"
2 Blue Dolphins - 5.5"
3 Blue Dolphins - 1.5"
1 Tetracanthus - 5"
1 Male Fuelleborni - 3"
2 Haplichromis species 44 - 3"
1 Aulnocara "red shoulder" - 3.5"
1 Lemon Yellow Hybrid (bought before i knew any better) - 3.5"
1 Tiger Tilapia - 3"
2 Julidochromis reganni - 2.5"
1 telmatochromis vittatus - 2.5"

2 Syndontis cats
1 bushynose pleco

Whats happening:

One problem I have been finding as my fish have been growing from
juveniles
to adults, their tolerance for eachother, but more importantly rearraging
of
tank decoration has been greatly reduced. In the past 3 months I have lost
a
Flameback, the female tetracanthus (i was going to get more females, but
couldnt find any), female fuelleborni. Last night one of the juvy blue
dolphins jumped out of the tank, but luckily i noticed in time and saved
it.

2 days ago I rearranged the tank decorations for the first time in about 3
months (i find the decorations have to be moved every few months in order
to
do a proper gravel vacuum). Ever since, the hierarchy of the tank has
shifted, and the tetracanthus is getting down half of the tank, including
my
prize front, which used to be the tank head. now the front is banished to
the top corner of the tank with his mouth keeping slightly above water.

I turned lights off that day, and fed before and after to try and minimize
agression.

I always heard people accounts of how difficult keeping africans can be,
and
now (despite relative success over the past 1.5 years)am am finding out
for
myself.

A few issues

1. i expect the tiger tilapia to get banished when he is bigger and more
of
a jackass.. but my wife is in love with him
2. i also expected tetracanthus might become a jackass too.... he is so
gorgeous though.

So what do i do? Should i wait a few days and see if the front can find
his
way back in?
If i have to get rid of one (i would think the front or the tetracanthus),
the decision will be tough. IS there anything i might try to avoid this
eventuality. As well.. i am worried that when i get rid of one, a new one
becomes the tank jackass... how can i end the cycle? Or should i just let
them be, and let the front learn to fend for himself?

Maybe try overstocking my tank with some new fish to take the heat off the
others?

I am at a loss for how to solve my problems... and advice would be
appreciated.

Thanks

Jeremy