Betta Fish Tail Types | How to reclassify betta fish types by their tail?


Have you ever wondering that how many betta fish types, and how is it different? It is quite the first question for beginner aquarists. The betta fish types are not only categorized by color but also categorized by tail types. It is the most common to classify betta fish by their tail. In this forum, you will see the definition of each betta fish’s tail type that is usually found in the aquatic shop.

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Types of betta fish classified by their tail characteristic

There are many distinctive variations in size and shape of betta fish tail types such as, long and majestic, or spikey and short. The different types named by the characteristic of their tail and fins like Crowntail, Veiltail, Halfmoon, Plakat, double tail are common found in the fish markets.

Here, let’s learn how to identify Betta fish by their tail types, especially the most common variations as below;

  • Halfmoon betta
  • Over Halfmoon betta (OHM)
  • Double Tail Betta
  • Crowntail betta
  • Comb tail betta
  • Veiltail betta
  • Plakat betta
  • Halfmoon Plakat betta (HMPK)
  • Dumbo/ Elephant ear betta
  • Rosetail/ Feathertail betta
  • Spade Tail/ Round Tail betta
  • Delta/ Super Delta betta
  • Giant betta

Halfmoon betta

The name of Halfmoon betta comes from an enormous rounded tail shape which perfect semi-circle similar to a half-moon shape. Their side view looks like the uppercase letter “D” shape.

Some people give red Halfmoon as a valentine’s gift to their beloved soulmate because the tail shape looks like a blooming flower petal. You can see that their fins form like a large curtain under their belly and overlap each other resembling fresh flower petals.

This Halfmoon betta fish is widely common in betta exhibition show and contest. It is also very popular among worldwide aquarists, especially in Europe and America. Their beautiful tail characteristic makes it famous, you will see many of this fellow in aquarium shops.

The caring concern of Halfmoon betta fish is sometimes they have an issue biting their own tail a bit so you need to know what causes tail biting and how to prevent it.


Over Halfmoon betta (OHM)

The Over Halfmoon betta is similar to Halfmoon but their tail is greater more than half-circle which spreads tail past more than 180-degree mark around their body. So they were called Over Halfmoon or OHM betta.

Double Tail Betta

Double tail betta is also known as twin tail. Their name implies two distinctly split caudal fins separated begin at the base of the tail which easy recognized. There are usually found larger and longer finned with a shorter body.

Although this type is uncommon, it may be considered a rare variety. But they are available in the BettaPal shop. The rare betta will make their owner attractive and unique appearance.

Crowntail betta

The tail of Crowntail Betta is resembling an appearance just like that on the top of a crown. This type is a very popular choice for freshwater aquarists and easy to find in the tropical fish markets.

Crowntail betta, male, has striking color, long and spikey fins, but a small amount of webbing extends no more than 2/3 of the length toward the tips. By the way, the female looks quite different from the male, their appearance is less majestic than the male counterparts such as lighter color, and shorter tail than male.

Comb tail betta

Comb tail is another species of betta fish that is similar to the Crowntail. It is also known as Half-sun betta. Their tail’s rays are longer than webbing. The Combtail betta has longer spikes until webbing in their fin that reaches further than 2/3 of the way up their tail’s ray.

Veiltail betta

Veiltail betta is widely available in the aquarium trade. This species is easy to breeding due to its easy-going nature. Their outstanding characteristic is a long flowing tail that drooping downward behind its body like a sail dragging on the seas while they swimming. The male usually longer tail, more coloring, but the female quite different they do not have the same remarkable characteristics as the males. The females have lighter colorations and also shorter fins and tails than the males.

Plakat Betta

Plakat can be found in natural habitats in the wild, which is considered to be traditional betta fish. The name “Plakat” is an original Thai word in which “Pla” means fish, and Kat” means bite so that “Plakat” in the Thai language means fighting fish that is a common name of Siamese fighting fish. Looking back for centuries of Thailand history, betta fish were commonly bred for fighting, gambling propose.

They are almost an exception betta fish when compared to other varieties which their fins are quite short and round but they have amazingly vibrant coloring especially since the males generally show color more than females.

Halfmoon Plakat betta (HMPK)

Halfmoon Plakat or HMPK was developed from Plakat due to the technique of breeding. Their characteristic similar to Plakat, but their tail slightly larger just like D-shape in Halfmoon tail spreads to semi-circle tails. This species is easy to breed because it is easy to take care of the tail. In the BettaPal shop, HMPK was grouped in Plakat Categories.


Dumbo/ Elephant ear betta

Their two board and long pectoral fins make Dumbo unique from other types and easily recognized. This type is not particularly classified by the shape of the tail category. Their long pectoral fins’ quite funny appearance resembles an elephant’s ears, hence Dumbo is referred to their name. If you would like to breed Dumbo betta, you need to set much gentler water flow more than other types because their extra-large pectoral fins make them swim difficultly.

Rose tail/ Feathertail betta

Rosetails betta fish is a particular Halfmoon betta whose excessive tail branching on their rays of the fins and ruffled edges. Their tail has branch rays which cause overlapping striking effects that make the caudal fin resembling a rose-like aesthetic or similar to a flower petal as it starts to wilt.

If the tail is even more exceedingly branch of fin rays giving an extra ruffled appearance then it can be considered as a Feathertail betta. They are really beautiful, look like flowers or a frilly dress.


Spade Tail/ Round Tail betta

The spade tail shape has a wide base which then narrows down smoothly to a point, the caudal fin appearance looks like a shape of a spade. Sometimes spade tail is mistaken for a round tail or fantail betta, a single fully rounded tail with no straight edges.

Delta/ Super Delta betta

Delta is from the Greek alphabet delta, a shape like a triangle. The tail of this variation starts narrowly close to their body and it widens toward the edge into a triangle shape that looks like an inverted triangle.

Giant betta

The giant betta is an oversized variation more than the standard betta as its name. These types are classified not by their tail shape but by their size.


               There are different types of betta fish that can be identified by tail types. Their name called resembling what the tail shape looks like such as Halfmoon, double tail, crown tail, rose tail, spade tail, delta tail, and veiltail. Some betta fish types can be reclassified by sizes like giant betta, and their outstanding appearance like dumbo betta. We hope that now you can identify betta fish tail types by yourself.


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