tiger barb woes

[Darkness]

so i have my 55 gallon with 11 barbs and 12 neons. I originally had the barbs in a 10 gallon for a week while my tank finished its cycle, and they acted fine. now in the 55 gallon, i had a barb missing the top half of its tail after two days, and now on the third day its missing the rest of its tail and part of its top fin. are they going to just keep attacking it to death? or should i put it in the ten gallon alone for a while? or even put it in the 29 with my guppies and platies?

i dont want to have to be constantly removing fish for repair. 11 tigers and this one is the only one getting hurt.

[*Sarah*]

Is it possible that the fish has finrot?

[zackish]

I would put it in the 10 and try to quarantine it at least or just throw it out.

[YaYgoldFish]

I would put it in the 10 and try to quarantine it at least or just throw it out.
you dont "just throw out" a fish...

[zackish]

you dont "just throw out" a fish...
By the sounds of it it sounds like the fish is really messed up. If it's missing its whole tail I am willing to bet it can barely swim.....why not just kill it and put it out of its misery?