Neon tetras are small, brightly colored freshwater fish that are popular in the aquarium hobby. They are native to the Amazon Basin in South America and are known for their stunning iridescent blue and red coloration.

Neon tetras have specific requirements when it comes to their environment. They prefer a slightly acidic pH level between 6.0 and 7.0 and a temperature range of 72-78°F (22-26°C). It's important to maintain these conditions in order to keep the fish healthy and thriving.

In terms of behavior, neon tetras are peaceful and should be kept in groups of at least six to ten individuals. They are active swimmers and enjoy having plenty of swimming space, as well as areas to hide in and explore.

Overall, neon tetras are a great addition to any aquarium with the right setup and care.