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How to divide the male and female goldfish

2025-10-07 13:14:30 pet

How to divide the male and female goldfish

As a common ornamental fish, goldfish are crucial to breeding and feeding management. This article will combine popular topics and hot contents on the Internet for the past 10 days to introduce you in detail how to distinguish between male and female goldfish and provide structured data for reference.

1. Comparison of appearance characteristics

How to divide the male and female goldfish

There are obvious differences in appearance between male and female goldfish, and the following is a comparison of the main characteristics:

featureMale fishFemale fish
Body typeSlim and flat bellyRound, with a swelling belly
FinsDorsal and anal fins are long and sharpDorsal and anal fins are shorter and round and blunt
CroptoholeSmall and sunkenLarge and protruding
Chasing starsSmall white dots on pectoral fins and gill covers during breedingNo star chase

2. Behavioral differences

There are also obvious differences in behavior between male and female goldfish:

BehaviorMale fishFemale fish
How to swimLively and active, like to chase other fishSwimming slowly, I like to hide in the corner
Reproductive behaviorFrequently chase the female fish and hit the female fish's abdomen with its headI will avoid it when I am chased, and my abdomen will be obviously enlarged

3. Characteristics of the breeding period

The breeding period is the best time to distinguish between male and female goldfish, and the characteristics are most obvious at this time:

periodMale fishFemale fish
Pre-breedingStar-chasing appears, bright colorsAbdomen enlarged, fertile pores protrude
Reproductive periodFierce pursuit of the female fish, with frequent pectoral fins swingingSwimming slowly, often staying near water plants

4. Common misunderstandings

When distinguishing between male and female goldfish, you need to pay attention to the following common misunderstandings:

1.Body size does not represent gender: Female fish are usually larger, but not absolute. Some breeds of male fish may also be larger than female fish.

2.Bright colors are not necessarily male fish: Although male fish will be more colorful during breeding, some breeds of female fish may also be very gorgeous.

3.Star chasing is not visible throughout the year: The male fish's star-chasing only appears during the breeding period and may not be visible at other times.

5. Professional identification method

For indistinguishable goldfish, the following professional methods can be used:

methodOperation stepsThings to note
Extrusion methodPress the abdomen lightly and observe secretions from the fertile poresNeed to operate a professional to avoid damaging the fish body
EndoscopeUse professional equipment to observe internal genital organsHigh cost, suitable for scientific research purposes

6. Summary

To distinguish between male and female goldfish, we need to comprehensively observe appearance characteristics, behavioral performance and reproductive changes. For beginners, it is recommended to observe during the breeding period, where gender characteristics are the most obvious. Mastering the correct identification method will help better reproduction and feeding of goldfish.

I hope that through the introduction of this article, you can easily distinguish the male and female goldfish. If you have any questions, please leave a message in the comment section to discuss.

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