How to Sex a Goldfish
Watch to learn how to tell the difference between male and female goldfish! There are four ways to sex a goldfish: by the presence or absence of breeding tubercles/stars, by the vent/anus shape, by the body shape, and by observing breeding behavior. Taken individually, each of these can be somewhat unreliable, so it's important to observe all of the above so you can be certain.
Blog post → http://www.solidgoldfish.com/2013/09/...
Sexing Goldfish and Koi by Steve Hopkins → http://www.raingarden.us/sexingkoiand...
Sexing Goldfish by the Bristol Aquarists Society → http://www.bristol-aquarists.org.uk/g...
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Music:
"Five Card Shuffle" by Kevin MacLeod (www.incompetech.com)