As far as transporting exotics goes, the fish will be difficult depending on species. I always suspended my bags from the vehicle's coat hooks, the suspension keeps them relatively stable in the bag and not so much vibration and jostling unless you're doing stunt driver moves and slapping them against the window. Speaking of which, the bags will lose oxygen/gain co2/change temperature very rapidly, so they will need to be covered against too much sun or too much cold air, and if you can't pump them full of oxygen before closing I'd suggest travelling with the bags open to allow decent oxygen exchange. This is a long trip, so resign yourself to the fact that unless you travel with an air pump/heater/filter you may lose a few of the more temperamental ones.
Never had any of the other critters you mentioned, although I am currently owned by an Eclectus parrot so I have LOTS of experience travelling with one of those. Has your bird travelled before? If not I would accustom him/her to car rides now, otherwise you'll end up with a blown eardrum and a panicked fid an hour after you leave. If you're going to be driving a long way I would highly recommend a decent travel cage, one that you can buckle to the seat for security. NEVER travel at high speeds with your bird on your shoulder, this is very dangerous and your bird can end up anywhere in the cab - including under your foot - or start chewing on cables or something and you'll have a huge wreck on your hands. For everyone's safety, the bird is best left caged for the duration of the drive.
Some birds don't like seeing everything whizzing by and like to be covered. Other birds (my Akasha is one of these) love to stare out the window and see things, and will actually scream when covered. Figure that out now, so you're not having to constantly stop on the drive and change things around. Bear in mind that A/C or heaters blowing directly on your bird will cause their nares to run and they may catch a cold, so you'll have to make them comfortable in the vehicle without air blowing on them. Also, be prepared to hear everything your bird has ever wanted to tell you, over and over and over and over again, for the ENTIRETY of the drive. 90% of Akasha's vocabulary has been learned on car rides, and we will converse the entire time - even during the 18 hour drive to visit my folks in Las Vegas. Playing loud music in an attempt to drown them out for an hour will only result in louder bird-speak. You will have no choice but to talk to your bird, unless you want to listen to screaming. So get comfortable talking to your bird, and bring some cough drops and plenty of water to wet your whistle! Personally I love talking to Akasha for the first 5 hours or so, then my throat gets dry and I start whistling instead lol. If we have to drive for more than 1 day, she's usually pretty quiet the 2nd day - balancing on her perch all day long must be exhausting.
I don't travel with water in her cage, but I do feed her watery foods like apple, celery, watermelon, things like that during the trip, and stop several times to offer her water. Lay a cloth down on the seat or you'll be picking food bits out of the upholstery for days afterward. If your bird is harness trained, some time out of the cage at a quiet rest area will be appreciated. Akasha always likes to sit in the sun at lunchtime and have a short nap on my shoulder, out of the cage for a while, while she commandeers my food and drink. She is old hat at car trips though, and loves the attention she gets, and is very well trained to wear and move around in a harness - don't do this if your bird isn't trained or doesn't like attention or being outside, you'll just stress him out for nothing. If your bird isn't harness trained and you either can't or don't want to train him to accept it before the move, it's best if he remains in his cage. Never rely on a bird's clipped wings to keep him earthbound - even the harshest wing clips can allow a parrot to fly with the proper headwind, and you DON'T want to discover that he's overdue for a trim after he decides to go on an adventure in the middle of nowhere.