Hiya Metermaid, I've been following these posts of yours with interest and im happy to see the right questions asked
First off the cichlids will most probably bite you, mine do, they are just curious and want to see if you are edible, also i hand feed mine at times so go figure i must look like dinner!
Most of the cichlids will resolve disputes with posturing i.e. raising fins, flaring gills etc. Often if this fails, they will fight and bite fins, with the loser hiding in a pot/cave for a while. The thing with cichlids is that they are territorial, and try to pick the best breeding spots, so it is best to get them small and all together, so they can sort it out right from the start who gets what cave.
Unfortunately in many species of these african cichlids we can only keep one male in the tank, if not these combats will continue until one fish is destroyed, or worse case scenario both. Another option is that the more dominant one will prevent the lesser from feeding, therefore it will sstarve and waste away..........
An important thing to do is not to move the tank around or add new decoration when it is set up as these fish will start to quarrel over it.
Also in some cichlids, the aggression factor can go through the roof when they begin to spawn, turning a nice and placid fish into a homicidal maniac, but thats why we love em eh?
I have noted that by keeping a larger fish than the rest of them can break up many fights, i keep a large female livingstonii with my alunacarras, and she barges into any fight. This breaks them up and prevents them from doin any serious damage to each other.
I hope this helps, im sure other people have other methods and they are all just as valid, after each cichlid is an individual with its own temperment
