Neon tetras are small, colorful freshwater fish popular in home aquariums. They are known for their vibrant blue and red stripes, which make them stand out in any tank. These fish typically grow to about 1.5 inches long and thrive in schools, so it's best to keep at least six together. Their peaceful nature makes them great companions for other small fish. In their natural habitat, neon tetras are found in the Amazon River basin in South America. They prefer warm, soft water with plenty of plants and hiding spots. Caring for neon tetras is relatively easy, making them a favorite choice for both beginners and experienced aquarists.