Koi Gender There are a lot of reasons to want to know the sex of your koi. It’s obviously very helpful in koi fish breeding

From 00:00 Introduction
body posture 0:50
pectoral fins differences 1:08
vent differences between 2:00
Gills as indicator 1:35 Gills tubercles on males

#Koifishgender #KoiFish
You can also identify a koi's gender by examining the vent area on the underside of the fish. A male koi will have a line from head to tail.

There are two main indicators of sex in koi. The easiest way to tell is from fin shape and color. Male koi have smaller, more pointed fins that are opaque

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Clue #1: Age
Koi are easier to tell apart when they're sexually mature, and so your first clue will be age – which is related to their length. They're considered sexually matured (3 years old for female and 2 years old for males) when they're about 10 inches long. If they're between 3 and 10 inches, they're still juveniles and may be difficult to sex. But not all the case there are also smaller koi fish that are sexually matured already but their growth is just stunted only because they are kept in a smaller container in the shops or some pond keepers that don’t have big koi ponds some also stunted growth koi fish are also pot belied short type koi fish that don’t grow really huge

Clue #2: Body Shape
Immobilize your koi by capturing it in your pond net and take a look at it from above. A mature male koi will have a slender looking body, while a female koi will have a rounded body, particularly when it's spawning season and she's carrying a nest full of eggs!

Clue #3: Fin Shape
Next, to examine your koi's fins. A male koi's pectoral fins, the ones near his head, will appear pointed and solid in color. In addition, the first ray of his pectoral fin may be more substantial when compared to his female counterpart, which will display rounder fins in addition there are also breeding stars found at the edge of the pectoral fins

Clue #4: Tubercles
During breeding season, you may see little white growths, called tubercles, on male koi's face and pectoral fins. They're perfectly natural and will disappear once the fish have finished getting frisky. Females don't develop these protrusions tubercles also helps stimulate female koi fish to release pheromones. The males will rub this to the female g spot

Clue #5: Ventral Area
female koi fish ventral area is protruding while male koi fish ventral area hole is concave meaning its hole going inward compared to female koi fish which is outward

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