Glad you asked that question about keeping what you catch fishing. Keeping a shark under 36" in illegal in the US without permits. And catching and keeping alive also requires a permit.
As for your tank, I'd go with cat sharks (coral cats are a personal favorite for me). They will be a little more active for you when compared to most bamboo sharks. The info about bonnets and sharpnose is correct. They need a LOT of space.
As for your tank, I'd go with cat sharks (coral cats are a personal favorite for me). They will be a little more active for you when compared to most bamboo sharks. The info about bonnets and sharpnose is correct. They need a LOT of space.