Sexing these kribs?

[Visionist]

Its my knowledge that males have sharp dorsal fin with color that runs right to the tip of the fin. Females have a rounded fin and the color stops before the end. By the looks of it I have 2 females, just looking for a second opinion before I bring the smaller one back to swap out for a male since I sexed them wrong(assumed the pink belly meant female non pink male).
Older female:

Younger female:

 

[delfisherman]

Males have a pointed tail and longer and less round then males

 

[Visionist]

That's exactly what I said...minus the typo

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[Rivers2k]

Females have purple bellies. Looks like two males to me.

 

[Fishdude3233]

Those are two females for sure. Is there a male In The tank?

 

[Visionist]

Those are two females for sure. Is there a male In The tank?

No. I returned the smaller one today for a male.

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