The Copper Tetra, also known as Hasemania (Hasemania nana), rightfully holds a place among the most popular and beloved freshwater inhabitants. This small, yet incredibly bright and active fish can liven up any planted aquarium. A distinctive feature of the Hasemania is its rich, iridescent copper-orange or reddish coloration, which becomes particularly intense under proper care and in soft, slightly acidic water conditions. Thanks to its peaceful nature and relatively easy adaptation, the Copper Tetra is suitable for both experienced aquarists looking to create a stylish biotope and beginners mastering the basics of keeping schooling species.