Right here I go! I have a 6ft tank with 2 cat fish 12 zebras and about 12 tetras loads of plants,tomorrow I am off to buy more fish I fancy some angel fish but have never been very successful with them as they seem to fight always thought they were peaceful,used to buy about 8 at a time and they fought to the death,what would be a good mix of fish as at the moment tank looks very empty how many could I have in a tank that size also fish that will add a bit of colour

Whilst you're at it, buy some more catfish, as most species enjoy being in small groups.

My main concern with Angelfish is the size of the tetras. Small tetras can fall victim to predation by larger Angelfish, so this needs to be evaluated first. However, since most Angelfish you'll find in aquatic stores are quite small the whole predation issue shouldn't be too much of a problem, especially so since the Tetras are there in the first place.

If you want a bit of colour and don't mind waiting for a few months, a small group of Rainbowfish would be ideal. Many species do take a while to show their true colours for which they're renowned for, however with a varied diet and good water quality they should colour up fairly quickly. In a 6ft tank you could try anything from Boesmanis to Red Rainbows, the latter of which I recommend keeping in groups with a female to male ratio of at least 3:1.

I like Rainbowfish but when I asked at the shop the fellow in there said they were"nt a community fish,he has got some fish called scats in there and said they"d be OK but I thought they had to have brackish water

Rainbowfish most certainly are suitable for a community aquarium, so I'll have to disagree with the guy in the aquatic store.

I'll also have to disagree with his recommendations with the Scats. Both species (Scatophagus multifasciatus and Scatophagus argus) are sometime sold in freshwater conditions as juveniles, however sub-adults and adults require full brackish conditions for the long term. Scats are also known for their boisterous behaviour.