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Following are some methods that can be used to recognize the sexes but even these are useless unless the fish are at least a year old, i.e., have attained sexual maturity.
1. Midline ridge: male goldfish have a ridge running through the back of pelvic fins to their vent opening on the underside. The ridge is either completely missing or smaller in females.
2. Firmness of abdomen: The area between pelvic and anal fins is pliable for females but very firm for males.
3. Shape of the vent: Though difficult to figure out, the female vent is rounder and convex, whereas the male vent is thinner and concave.
4. Shape of the pectoral fins: Male pectoral fins are pointed with stiffer leading ray and female pectorals are rounded, shorter with finer front fin ray.
5. Features: females are brighter colored and are more active. This could be a difficult way of pointing out a female but you could try!
6. Check out: One theory says that you can introduce a known female into the tank and watch for the reaction of fish. Males will check out the new fish but the females will show no interest!
The only way you can learn to spot male and female goldfish is by closely observing known males and females and noticing their various traits. A pet shop could be a nice place to learn this.
During spawning season it will be easier because the male will follow and nudge the female relentlessly sometimes even bruising and injuring the female. Finally, it's only your experience that will give you any degree of confidence of judging the sexes by looking at the goldfish in a tank. Difficult but definitely not impossible!
For more information on keeping Goldfishes, visit http://www.tothefish.com By John Lone
Published: 10/17/2006
What else can I help you with?
Do female goldfish have a white belly?
A female or male goldfish can be any colour. The colour of the fish does not determine the sex of the fish.
Do male goldfishes have longer tales than female goldfishes?
No, both male and female goldfish's tails are the same length. The sex of a goldfish does not determine how long a goldfish's tail will be. Usually the parents and what type of variety of goldfish the fish is will.
Do girl goldfish have the eggs before or after sex?
after
What determines whetether a fertilized egg develops into a male or female?
Goldfish lay thousands of eggs at a time, and you cannot really sex a goldfish until it's breeding season (2-4 years). So there isn't really a way to determine it that early.
Picture cycle life of goldfish?
they have sex and babies are made (: then sadly they die :( they have sex and babies are made (: then sadly they die :(
How many sex cell chromosomes are in a goldfish?
They are containing 94 chromosomes In the sex-cell And that my answer to this I think
If each body cell of goldfish contains 94 chromosomes how many chromosomes are contained in a goldfish sex cell?
47.
How do you determine the sex of a common goldfish?
They can only be sexed when they are ready to breed. At this time the males develop white spots on their gill plates and pectoral fins. The females just develop chubby tummies.
Does beak color determine the sex of a black capped conure?
In black-capped conures, beak color does not reliably determine the sex of the bird. Both males and females typically have similar beak colors, which are usually orange or yellowish. The most accurate way to determine the sex of these birds is through DNA testing or observing behavioral traits during breeding season. Thus, visual characteristics like beak color are not a definitive method for sex identification.
Does a black sheep mean it's a male?
No a black sheep can be either male or female, there are no coat colours that determine the sex of sheep unlike cats.
How do goldfish do it?
The females lay eggs and the males fertilize them there is no sex involved.
How do you find out the sex of a common goldfish?
girls are fat . boys are skinny .
