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Hi, over the last 1-2 months my cobalt zebra has been living in my 4ft tank with some clown loaches. Now he has become territorial over the entire tank. I am wanting to restock the tank with new fish, but am somewhat worried that it will attack everything. This what what I was going to do to hopefully stop it from being so aggressive. I was to re-arrange all rock work in the tank and add the new fish I was adding in one hit. I am kinda hoping someone can offer advice on getting around this problem as one active fish in a tank that size, is a bit boring. Any suggestions on howto curb its aggression? Thanks.

What other fish were you planning to add? A common method of reducing aggression amongst mbuna is to overstock the tank (of course you have to have excellent filtration and maintenance to pull this off). Make sure there are plenty of rocks and caves as well.

The only way to get rid of a temptation is to yield to it. - Oscar Wilde

2 Red forest jewels, 3 Venestus and 2 Tangerine peacocks. I current have 2 Fluval 304's and a 1500l/ph power head on the tank. There are about a dozen or so caves right now, hoping to re-arrange to give more.