Tetra fishes are well known for planted aquarium beauties.
They are good to maintain in schools.
Sizes are medium-sized.
Tetra is the common name of many small freshwater characiform fishes. Tetras come from Africa, Central America, and South America, belonging to the biological family Characidae and to its former subfamilies Alestidae
Silvertip tetra (Hasemania nana) is a species of characid freshwater fish native to streams and creeks in the São Francisco basin in Brazil, but frequently kept in aquariums. Silvertip tetras are slightly more aggressive than other comparable smaller tetras, observed occasionally to nip other similarly sized tetras.