The vent is the opening that you see that is between the anus and the anal fin of your fish. I've searched the internet for some ideas of what may be wrong with him and have found nothing. Females will be larger and rounder. May 3, 2020 - Explore Christopher Cool's board "Koi fish colors" on Pinterest. See more ideas about Fish ponds, Pond, Koi fish food. The male’s vent is more sunken and concave. More often than not, they will continue to forage for food even after your feeding sessions. season, the female koi vent often has a blush of red color around its perimeter. This condition will be evident in mid summer although things … It is a common belief that female koi fish grow larger than male koi fish. 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! So there might be females that will have a rounded fin, but it comes in a solid color. If you want to know how you can tell the gender of your koi fish, then you came to the right place! A female koi will have the same line, but will also have another crossing in a “T” shape. Such koi, as These are the fins that are on either side of your koi fish. Below: The female vent in a sexually mature koi tends to protrude slightly, and also has a more prominent transverse ‘slit’ running across. Female koi, on the other hand, have larger, rounded fins that are partly or completely translucent or even transparent. Below are an example of the male and female vents. For some fish, these are located near the gills, however, for koi fish, you have to feel around their abdomen to know where those pelvic bones are. The mature male pectoral fins will mostly have a solid color and it will appear pointed. This can also be called as genital papilla. A female’s vent will also be more round and more pink than a … A female’s vent will also be more round and more pink than a male’s. If you are a WordPress user with administrative privileges on this site, please enter your email address in the box below and click "Send". If you think you have been blocked in error, contact the owner of this site for assistance. During spawning season, a female’s fish’s vent will be swollen and puffed out, compared to the male’s that is all tucked in. A female’s vent … For this factor, you actually have to feel your fish with your hands as it will be hard to know by simply looking at them. 2. More than that, knowing the genders will help you focus on the special needs of each gender. You can also identify a koi’s gender by examining the vent area on the underside of the fish. As for the females, they will not have these protrusions. They are the ones that are responsible for the movement that is directional. Download Image. I am Pierre, the owner of this website. However fancy this word sounds, it is just a round node that shows up on the fins and heads of your koi fish. At times, it might look a bit thicker than a regular line which is the case for plumper male koi fish, but it is still relatively thinner and straighter than those of mature female koi fish. This means that they are needed for your koi fish to go up and down as well as side to side. Telling the Difference: It … Therefore, if your koi fish are between three to 10 inches, it is a vital clue that it will be hard to know their gender as they are still juveniles. More than that, her vent will look pinker and it is generally rounder. This is why it is more accurate to know the gender of your koi fish with the other factors we discussed. Answer (1 of 1): I quote:www.pond-doctor.co.uk The differences between male and female koi The differences between the sexes become more apparent as they age, particularly so in the spawning season. You can also identify a koi’s gender by examining the vent area on the underside of the fish. A female’s vent will also be more round and more pink than a male’s. Hey! The male’s vent will be rather narrow and concave. 3. However, come breeding time, the males will start chasing the females. The size and color is not a factor as they both have various colors and they pretty much grow in the same size. Located on the underside of the koi, the vent is a key physical trait that can distinguish male from female. how to tell gender of koi You can also identify a koi’s gender by examining the vent area on the underside of the fish. The age of your koi is somehow proportional to his or her length. : more round in shape and a more prominent and long transverse ‘slit’ running across (shown by the red arrow) pictures I have taken from Koi-Bito and Koiquest Female 6. Male koi are slender, compact and torpedo-like in appearance, with very trim lines and smooth body contours. As well, the abdomen will swell and become soft and squishy the more ready the female is to spawn. If you are looking for info on how to feed your koi correctly, we highly recommend reading our Koi Feeding Guide here! Koi. Now the unscientific method most breeders utilize is to examine the abdomen and the vent. Chases after the female fish during the mating season. While the body and fin shapes can help identify the gender, they are not definitive. Some goldfish males develop a slight ridge on their abdomen which extends from the pelvic fins back to the vent opening. More often than not, the males will bump a female ’ s vent is the case, it... Female in order for you to understand how this information came to be larger than koi! See more ideas about fish ponds, pond, koi fish, like koi, it is safe to that. Also a lot of koi is somehow proportional to his or her mistakes you..., 2018 - how to breed koi fish, female koi vent line will have same... Photo this is where she will hold the eggs spawning time, you can properly them! 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