I have a red tail shark in a 30 gal tank. She is chasing a red glass barb very aggressively which is really stressing the barb. The red tail shark has very large log for hiding so I don't understand why she keeps chasing the barb. I read that as long as there is a place for the red tail to hide, it would leave other fish alone. Now, question (1) if I buy a bigger tank, like a 38 gal, will this alleviate the shark from chasing the barb since she has more room or (2) is it best to give her to my brother since he has a 55 gal tank and she'll be happier there? and lastly (3) will the red tail shark survive in a ten hour car ride? Thanks for anyone's help.