Hello,
Trios of boars rarely work out and it is increasingly difficult when they are young and going through their hormonal stage (between six weeks and fourteen months)
Please separate Coco and Fudge asap as keeping them together can result in serious injury.
Do you have a separate cage for Fudge to live in for the time being?
Next I'd strongly suggest reading through this brilliant thread for all the information and knowledge you need on boar behaviour and what signs to look out for.
http://theguineapigforum.co.uk/showthread.php?t=28949
How big is your cage? Guinea Pigs require 4ft x 2ft of space, and boars need a little bit more (5ft by 2ft) as they need enough room to play, get away from one another and be able to grow happily. The more room you can supply the better.
Secondly I'd also suggest for your two remaining boars living together to buy two of everything, two bottles, two bowls, two hay trays etc. This way they have their 'own' feeding area, their own toys and they don't have to share or argue who gets what it also stops one boar hogging the food bowl and the other going without. Another thing also to get is two or more hideys with two or more exits this stops one boar from bullying another into a corner, the best hideys i use for my boys is the cardboard boxes you can get from supermarkets as you can cut out your own entrances.
Hay! Boars need to be kept occupied so try and make the cage as interesting as possible, which can be done very cheaply. Stuff hay into cardboard tubes, place them on the cage floor, hang the tubes on string above the cage, add huge piles of hay, stuff it into plant pots etc. Just try to keep them occupied.
Oh and weigh your boars living together once every two days or weekly, this way you can make sure one isn't being bullied.
With your third boar it is very unlikely after a fight he will get back on with your other two males, the only option is either to try again once they are all over 14 months, to keep him side by side with your other boars (in a separate cage), to rehome him, to keep him and try boar dating at a rescue, or to neuter him and keep him with girls.
Anymore questions don't hesitate to ask!
Laura, mum to three boars!
xxxxxxx