What is the exact career title I’m looking for called?

Hello, so I figured I should ask here but a career I’m interested in is the one where you go into tanks at aquariums to clean them and feed the animals. I’m not exactly sure what the position is called but it’s something I’m really interested in at the moment. I want to know what the correct title is called so I can find out what exact qualifications I need in order to pursue it.

Video taken by me at the New England Aquarium last year as reference to what I’m talking about