Help sexing Jack Dempsey's! Quick...

[derekj03]

I want to take one back depending on which is which asap. I got both of these fish at the same time and one of them has grown considerably larger then the other one. They both look like females to me but i'm not sure. The larger one is starting to be very aggressive towards the smaller one. Thanks.

larger one

smaller one

 

[Tuscuttar]

May be a bit off topic but what tank size?

 

[Tuscuttar]

Females are paler in colour to the more vivid males. Females fins are rounded whereas males are long and pointed

 

[derekj03]

May be a bit off topic but what tank size?

55g with tons of filtration

 

[Tuscuttar]

K, i think the top picture is male, the bottom female, judging by the the sexing info i previously posted

 

[haynchinook334]

Females

 

[Tuscuttar]

The top pic is more vibrant in colour than the other

 

[PNWFisherman]

Top one is definitly a female. Bottom looks female also.

 

[djdlemma]

Top pic is a male. Females have hardly any blue spangles around the gill plate but it is hard to tell from the pics you gave.

 

[haynchinook334]

The top pic is more vibrant in colour than the other

Females have more blue on the lower gill plate then a male.