Sick Cherry Barb :(

[rob_cool1]

Hey guys.
 
I have a cheery barb in my tank (with a mixture of others) and he has over the past couple of days been laying on his side and struggles to move.
i have put him in a net so the other fish cant nibble him but hes not moving much.
 
One of his pelvic fins is tucked in whilst the other one is straight out, when i fed them earlier he started to swim but spiralled when he moved forward, his belly has gone pale and the top of his head has gone really dark (sign of stress maybe?) he also looks a bit floppy like he has no strength to keep himself straight
 
is there anything i can do to make him well again or is it too late?
 
If you need any more information or pictures then please ask 
 
Thanks
Rob

 

[phoenixgsd]

it would help if you could tell us the tank size other tank mates and water stats?

 

[rob_cool1]

Sorry it's a 130l aqua style 620t. I have 5 platinum angels (bodies about 50p Size) which will go Down to 2 when I get a pair, 4 Odessa barbs, 4 5 banded barbs, 1 bn, 1 clown pleco, 1 L048 (only 3 inches) and 4 corys.
It has the stock filter plus an aqua internal 200 in case one goes down.
I did a water change about 2-3 days ago, ph is 6.5 and I don't know what the other stats are as I have no money to buy a kit. Il go to pets at home tomorrow and get it tested.

I haven't added anything new for ages and do e my water changes like normal so I don't know what it could be