Aquatic animals that are not fish?

Go with a turtle. Usually can get a Red Ear Slider turtle from your local pet store. I would at least get at minimum a 40 gallon tank. If you get two, start out with at least a 55 gallon tank. But be prepared to spend a good few hundred to get everything you need for the turtle. They are more complicated than fish to take care of. They are very entertaining and have personality, unlike a stupid fish, frog, or newt. You'll need a UVB and UVA light setup, a water heater, and a turtle dock( a place where they can get out of the water under there heat lamp. I now you can get a 55 gallon complete tank setup at petsmart for around $230. And about another $200 for everything else You need for the turtle. If you decide to get turtles, pleas do your research before buying.