Ohm is a betta with a tail over 180 degrees. Of course, it is also a HM, and it is the best in HM.
The performance of CT is that the tail is needle-shaped, like the crown worn by the king (Europe), called the crown tail, and some are like the mane on the lion's face, so Hong Kong is called the lion king fighting fish.
There is also a very expressive CT, called CT (King CT), which is very attractive and has become a leader in CT.
The English abbreviation PK is actually a short-tailed betta with a short tail but a strong body. Among them, the strongest one was selected by people for "intensive training" and developed in the direction of fighting, but his colorful and beautiful swimming posture also attracted many players.
DT double-tailed betta is actually a variation of the tail shape of betta. Some people think it is a kind of deformity, and the tail is divided into two halves. In fact, the fighting fish mentioned above can have two tails. I think HM's double tails are the most beautiful.
The last VT-ponytail is also the most common one. Generally, the angle of the tail will not exceed 60 degrees. Almost all fish markets sell this kind of fighting fish, which is of course the cheapest and most common.