The first thing you need is to find what rules and regulations the country you're moving to has for this, and you'll need to be prepared to pay first for the transport and then for the quarantine for the time determined by officials at your destination.
There are companies that are specialized in moving live animals; you need to contact one of them. (I cannot give you the names here but there are several companies doing air transport.) These are international companies doing world wide transport.
Your turtle will probably need to be vaccinated and your vet needs to provide documentation for the vaccination.
Companies where I live do import live fish from Japan (mostly koi and goldfish); they have to keep the fish in quarantine for a predetermined time controlled by a vet and undergo health and safety inspections.
I believe moving your fish and your turtle will cost more than it will cost you to get new ones at your destination.