Check the PO Box wrote:My Tiger Barb keeps attacking my Comet Goldfish. Is it a Territory thing?
And I understand that I shouldn't have a Comet in a Ten Gallon but my stupid brother got it from a Carnival and I'm still trying to find someone to take it in. He's only like 2 inches right now, but still. x.x
Your tiger barb isn't territorial, he's just being a tiger barb. Honestly, the only territorial barbs I have come across so far are panda barbs.
Tiger barbs are, to put it in short, jerks. They can and will rip up anything slower than them, even other barbs, unless they're in huge spacious tanks in large numbers, like a random example would be a 125g with maybe 45 barbs.
Barbs are schooling fish, and should be in at least a school of 6. I mean, sure he can be alone, but I'd imagine it would be very lonely since they're a schooling fish. I would advise that you get 5 more buddies for your tiger and find a spare tank or something for your comet so he doesn't get ripped up beyond repair. If it gets bad enough I wouldn't think twice about putting him in an empty pretzel jar or something until someone could take him.
If your tiger is a male (his nose will be really red if it's a boy, and really light pink or white if it's a girl- alternatively, the red stripe on the dorsal fin will be more red and thicker for males and more pale and thinner for females) you'll want to get large females and maybe 1 other male minimum for the rest of his school. Male tigers fight by biting each others faces and ripping tails off. But they're hard to sex until they reach 2.5"+, and most places only sell them around 1".
If you don't want more jerky tiger barbs, but want to get friends for your barb, you could try getting female black ruby barbs to put with your tiger barb. The females look similar to tiger barbs, and will school together, but the female black rubies are not quite as nice looking. However, female black ruby barbs are much more peaceful than tiger barbs. Male black ruby barbs are gorgeous, but it's not all the time (they change colors during different times of the day) and they'll fight other males and harass the females, so it's better to have just females if you don't have a lot of space for the females to get away from the males.
Sorry it took me so long to respond to the thread. I had a long day yesterday.
Also, I'm really sorry this is so long ugh I type too much...
Feel free to pm me anytime if you have any questions (: