confussed

hi again can you help as im pretty confused, i want to get some rbp but from reading other posts its seems there more than one type iv kind of picked up on that it depends on the location they were captured, can you tell me do all rbp look the same but have different names for there locations, i saw a picture saying cariba and it was identical to the rbp at the aquarium, please shead some light on the situation for me. cheers.