Rare betta fish varieties include the betta splendens fighter, the half-moon betta, and some improved varieties obtained through artificial selection and hybridization, such as the white-forked-tail betta, blue-forked-tail betta, red flame, blue flame, etc. These varieties attract much attention due to their unique appearance characteristics.
The betta splendens fighter is known for its fierce aggression and elegant caudal fin and is hailed as one of the most aggressive betta fish. The tail of the half-moon betta can spread to 180°, shaped like a half moon, which is very beautiful. The improved varieties obtained through artificial selection and hybridization, such as the white-forked-tail betta, blue-forked-tail betta, red flame, blue flame, etc., have unique appearance characteristics, such as albino, red, blue and other variations, further enriching the diversity of betta fish.