Fish are friends not food but your not a fish so I can't make any promises taming might go well. And gess what your basilosaurous isn't a fish either it's a mammal so don't come back complaining to me that your basilosaurous died.
Sometimes that shark, he looks right into ya. Right into your eyes. Y'know the thing about a shark, he's got... lifeless eyes, black eyes, like a doll's eyes. When he comes at ya, doesn't seem to be livin'... until he bites ya