Ardeus;830566; said:
But do you notice some kind of evolution in the total number of fish? Are they constantly increasing or is the number of fish stable now?
And what about natural selection going on in the tank? Do you already have an idea about what species are "conquering" the tank?
It was interesting watching the various mafia factions fighting for control.
Big fish: I had that infamous two foot black shark that hammered the arapaima and red tail cats that weighed as much as 90 lbs. While the Wallego hammered the shark and in turn the red tails beat up the 2 Wallegos. So somewhat of a balance except for the shark killing the arapaima and 3 of the red tails. In 2004 I had my dinosaur extinction where 50% of all large fish perished in a 3 weeks of hell. Nobody could identify what killed them.
The remaining red tails, 6 panagasius sanitswongi, planiceps, tiger shovelnose, some Collosomas etc perished.
However some of the Collosomas, the wallegos, Mystus , Nigers, Nile channel cat etc got ill but recovered. Of course the Shark came through without a scratch. I then in time added the 3 baby redtails and my baby arapaimas when they reached the appropriate size.
small fish: I had hundreds (and possibly over 1,000) of adult Protomelius similis that from 1995 to 2004 swam in huge shoals and probably represented about 75% of the africans in the tank. After the kill mentioned above occured the fish that survived changed the balance to 25% P. similis and as the fish repopulated the tank within 6 to 8 months to the same numbers as I originally had the P similis got wiped out to only a dozen fish. The barbs have remained somewhat constant and have reproduced.
I have include a few pics of the kill the first week. A friend named Bill Gibbons helped bring the fish out for me.
Guess that seems kinda small to you 
any chance of some pics of the cichlids?
