Jump to content

Sexing medaka ricefish


Recommended Posts

Wondering if anyone out there has a tip for sexing ricefish. Obviously if I see one carrying eggs, we have a female. Several sources online refer to males having "bigger" anal fins, but the issue with that is you need to have both sexes in order to compare... and if I knew that I had both sexes, I would not need to know! Haha Does anyone know a better way to sex them, especially ones that do not rely on comparisons with the opposite sex?

Edited by Kat_Rigel
Link to comment
Share on other sites

I couldn't accurately sex my ricefish until they started spawning, but now I've gotten pretty-ish good at it.

The females tend to be a little larger and fatter, with shorter anal fins like you and kammaroon said. The male's anal fins remind me of a skirt.

I attached a picture of my ricefish, I foolishly put fast-moving orange ricefish with transluscent fins on orange substrate, so...it's also outlined for you. You can also see the size difference. Hope it helps!


Edited by wendypizza
  • Like 3
Link to comment
Share on other sites

  • 1 year later...

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Create New...