What is a cardinal tetra?

I have an aquarium and these are pretty fish.

I had an aquarium with Cardinal and Neon Tetras and a few Angelfish. They were really neat! One day my really young cousin dumped the whole can of fish good in. I had to scramble to clean it all out. Whew!

I used to have an aquarium with some Tetras.

they're most commonly used to start off a tank, to get the chemical levels etc perfect for the bigger, pricier fish 🐟🐠🐡😀

they are beautiful fish, but, I think everything is beautiful!!