According to Their Pattern
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The dragon scale bettas are easily distinguishable by their metallic body color. They have thick scales. These look like armor.
Butterfly betta has unique flowering tails which help to mimic a butterfly. It looks very pretty when it swims around the fish tank. Generally, their fins are white or transparent.
The marble bettas have one main solid pale color on their body which is complemented by another dark color. They were created by Orville Gulley by an experiment.
Koi bettas are developed from marble betta. By breeding marble betta carefully, this bright, colorful koi bettas were found. They can't be found in the wild. They are very popular pond fish.
Dalmatian bettas are one of the rarest betta. Their orange color pattern is very unique. They may seem like marble betta. However, their colors are very pronounced. They have a pale orange body.
A Cambodian betta should have a bi-colored pattern on its body. The pattern should not be too distinguishable. The color of the body & fins should be similar type of bi-color.
A bi-colored betta should have two very distinguishable color patterns on its body. One solid color or its body should not match the other color of its tail like Cambodian betta.