The determination of discus gender will engage our attention very much.

We will wonder which our fish is male and female when they reach in maturity.

Below I stated some criterias that will reduce the chance of mistake on “determination of discus gender”.

Some properties of discus give us clues.

Mouth and tounge structure                                                                       

Male discus have thick and plump tounge especially lower part.

Jellybag structure                                                                         

Male jellybag is more luxury and arc is more sharp

Back and anal Jellybags

Jellybags in male are more wide and projection on tail does not crossover with tail.

Body form

Female has more circular form. Diffrenece on jellybags of male the shape is more like to ellipse.

Head structure

Male head is more arc summit then female.