How To Spot A Male Betta Fish From A Female Betta Fish?

Siamese fighting fish males are typically more aggressive than females. Additionally, they have bigger tails and fins. While colors on males tend to be bigger and brighter, there are also some wonderfully colored females.

It could be challenging to tell men from females as a result. An ovipositor tube is located between the ventral fin and the head of female betta fish. It’s a little white dot.

Compared to men, women often have a stockier build. Betta males construct bubble nests and watch over the eggs until they hatch. Additionally, the beard membrane is much bigger on men than on women. The opercular membrane of a female is little visible in comparison to theirs, which is highly visible.


Male and Female koi betta for sale are the same size at birth, but by adulthood, males are bigger. From the tip of his mouth to the base of his tail, a male betta will reach a length of around 212 to 3 inches, whilst a female may only reach 2 to 214 inches. Male bettas are slimmer than female bettas despite having longer and bigger bodies.

Tails And Fins

Bettas with females have smaller tails and fins than those with males. The males have exquisite, long, flowing fins and tails that swing and wave as they swim, while the females often have more of a normal fish appearance. One of the characteristics that draw many people to bettas is their distinctive fins and tails, which are found on male fish.


A male betta is what you want if you’re searching for a spectacular Female koi betta for sale with vivid colors. Although they don’t always appear as vibrant, females exhibit the same hues as men.

The more vibrant, flashy hues are usually displayed by the men. The only way to tell if a betta is male or female is by looking at its color, although occasionally, you may see a female betta that has grown a vivid color.

Beard, both male and female betta fish, have beards that start just below their gill plates. When the fish’s gills close, these tiny membranes open. A male betta’s beard is easy to spot since it is thick and obvious even when his gills are open. On the other hand, the female betta’s beard is so little that, unless you’re looking intently and her gills are closed, you might not even notice it.

Intensity Of Colour

The same colors are typically found in the same places on both sexes of platies, which is why male and female platies frequently share patterns. Some types, like red platies, typically exhibit more intense body and fin colors in the males than in the females.

Fin Form

Between the sexes, the anal fins have different shapes. Anal fins on female platies are rounded. Anal fins on male platies are long and slender. A gonopodium is a fin that is utilized to fertilize the female.

The Bottom Line

The lovely betta fish is simple to look after and to soothe to watch. Male bettas are the vibrant fish that most people are familiar with, but if you have both a male and a female, you’ll probably also have baby bettas. Know the genders of your two-betta fish before taking them home. Two men will engage in a fatal duel.