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* Believe it or not this is actually incorrect. The female goldfish has a small white protubance at the anus as well as being slightly fatter than a male. During mating season, the male will display white dots around tha gills and fins. The first answer is correct. The only way to tell the sex of ALL species of fish is to observe them breeding and to realise that only females can make/produce eggs. In some species there is a very obvious difference between the sexes and these differences can help the aquarist choose "breeding pairs" without having first of all to watch them breed in order to sex them.

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14y ago
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12y ago

the girls have one fin under there tails boys have two

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Q: How do you tell tell the gender of a fish?
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Related questions

Can you tell the gender of a pa-cu fish?

by looking done where the tail or fins are


How do you tell a boy fish?

Each fish is different to tell the gender. Usually, the female is the larger one, and there are color differences, varying from species to species. Consult a field guide.


How do some fish change gender?

Most fish are incapable of changing gender.


What is the gender of fish in English?

The noun 'fish' is a common gender noun as a word for something that can be male or female.The noun 'fish' is a neuter noun as a word for a food substance (a thing that has no gender).


What is gender of fish?

The fish have the same genders as we do, male and female


How can you tell what sex your fish is?

Near your Pokemon's name, there's a symbol... if it's color blue, you're Pokemon's a Male... if it's color pink, you're Pokemon's a Female... Some Pokemon doesn't have gender... You can always check you Pokemon's gender this way wether it's a fish or not...


How do you produces?

producing fishFirst of all you need a female and a male fish but its hard to tell what gender a fish is .In the rite surcomstances the female fish will lay her many eggs and afterwoods the male fish will insert his sperm into the eggs. They dont have sex.But its hard for fish to lay eggs in captivity


Can two different species of fish mate and how do you tell if they are male or female?

I would stick to breeding the same species of fish. When two different types are bred, sometimes the young are unable to survive, since the parents are so different. To tell the gender, usually a male fish will have a longer annal fin then the female. But this does not always work. I would ask your vet or an assistant at the fish store at which you bout your fish. They are specially trained to tell the differences.


What is masculine and feminine noun of fish?

In English there are no masculine or feminine forms. English uses gender specific nouns for male or female. The noun 'fish' is a common gender noun, a word for a male of a female. There are no gender nouns specifically for a male fish or a female fish.


What is Mayj Pereyra real gender?

the gender is a guy you can tell


How the fish adapt for survive?

One way fish adapt is by changing gender.


How can you tell the gender of a black molly fish I have two and I am not sure if they are mating or not?

To determine the gender of a black molly, take a look at the anal fin. A male's fin has a tubular shape. A females fin is shaped as a fan with a round body shape.