No, Tetras are not cold-water fish; however, they can adjust to cold water for a while. Tetras originally belong to Amazon Basin in South America, which is a tropical region with warm water streams. Moreover, Tetras can adjust to a temperature slightly below the ideal mark, but the side effects start showing.

What tetras can live in cold water?

Bloodfin Tetra

Like most types of tetras, these fish aren't very large and can be kept in a pretty small tank. When it comes to setting up their habitat there's not much to worry about as well. They can thrive in cold water, a range of pH levels, and a variety of decorations and layouts.

Are tetras warm water fish?

Well, tetras are tropical fish and thrive in a temperature that ranges between 75° and 80° F. These fish develop serious health issues when you do not offer the ideal water temperature. So, you can come up with a solution like getting an aquarium heater, right tank placement, etc. for your tetras' safety and health.