What is the difference between girl and boy goldfish

Females will be on the run and sometimes might get tired or have torn fins from the rigorous process. Sign up to receive our latest articles, tips, tricks, and guides, plus discounts on top products, to hit your inbox every week! Betta Goldfish Fishkeeping Supplies. Lindsey Stanton Last Updated: Oct 21 Want to know if your goldfish is a male or a female?

So, when does a fish reach maturity? For most, it is around a year of age, sometimes as early as 9 months. Ready to get started? Read On! Males also tend to have longer, more pointed tail fins. Shape Females tend to be rounder and thicker than males, especially in the abdominal region. Males have a more angular body structure.

Males look elongated and lithe compared to females. Males are more streamlined than females. Females will also have a bulge on one side of their bodies where the eggs are developing, making them appear more asymmetrical or lop-sided. Appearance Females are usually more vibrantly coloured than males. Males have longer, thinner pectoral fins that appear more ragged. Males have visible white bumps along their gill covers.

Males have a small, oval-shaped anal opening whereas for females, this feature tends to be larger and protrudes slightly. Behaviour Females are often calmer and less aggressive than their male counterparts. Females will often hide among plants and rocks prior to spawning.

Females will sometimes refuse food prior to spawning. Keep in mind that goldfish of any variety can and do interbreed. Comets and shubunkins do not know they are not supposed to breed with bubble eyes and lionheads.

So if you want to maintain a pure strain of goldfish, do not mix varieties in the same pond or aquarium. If you want more detailed information on goldfish breeding and want to share the experiences of other hobbyists, I suggest you join the Goldfish Society of America P.

Box , Tulsa, OK Published: November 1, By: Chewy Editorial Published: November 1, By: Chewy Editorial Updated: November 3, By: Chewy Updated: November 3, By: Lindsay Schencker Updated: December 16, By: Chewy Editorial Published: January 1, By: Chewy Editorial Published: July 22, Many people are interested in finding out the gender of their goldfish.

You might want to know for breeding purposes, or just to make sure you didn't name your female goldfish George. Luckily, you can identify whether your fish is a male or a female by paying attention to physical and behavioral signs.

To identify a female goldfish, look for a rounder, thicker body shape. Females may also have a bulge on one side as breeding season approaches, and their vent, or anal opening, may protrude slightly. Male goldfish often have a thinner, more streamlined body shape than females, with a concave vent and a midline ridge.

Also, males often develop small white spots called tubercles on their gills or face during breeding season. If you want to learn how to tell your goldfish's sex by their behavior, keep reading the article! Did this summary help you? Yes No. Log in Social login does not work in incognito and private browsers.

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Related Articles. Article Summary. Part 1. Look for a rounder, thicker body shape. Female goldfish tend to have a rounder, thicker body shape than males of the same age and species.

They also tend to be deeper-bodied, which is useful for identifying sex from a side view. As breeding season approaches, the females will begin to develop roe eggs , which may cause a bulge on one side, making the female look asymmetrical or lop-sided. Look for a protruding vent.

The vent anal opening of a female goldfish is rounder than the male's and tends to protrude from the body slightly as breeding season approaches. In addition to a protruding vent, the female's anal fin may appear slightly thicker than the male's.

Part 2. Look for tubercles. One of the main tell-tale signs that your goldfish is male, is the development of tubercles small white spots on their gill-shields.