). A vivid splash of neon blue and purple, these modest tetras brighten up any tank and are generally retained in a small school. The neon and cardinal tetras have equivalent needs, and can Are living collectively in an aquarium. The one variation is definitely the cardinal tetra has red https://aquariumshops.tumblr.com/post/697124442607845376/tips-to-keep-your-fish-healthy-in-a-tank