Why did you join AA if you didn't plan to take anyone's advice? Fish are a responsibility, not something you just stick in a tank. This means you need to take into consideration the fish's needs, not just your wants. In order to keep neon tetras in a happy and healthy condition, they need a least a 10 gallon, fully cycled, filtered, and heated aquarium with at least a small school of five. These are living animals and you're taking their one and only lives in your hands, so why not try and do the best you can for them?