Are These Females To Small To Breed?

[0_Infinite_0]

I got some neon female dwarf gouramis not too long ago. Since I got them my male has built a bubble nest. I haven't actually seen them spawning though, so I'm wondering if my females are just too young yet? I've never had females before. I took a picture and tried to put up a ruler for measurements. 
 
Thanks.

 

[BettaBettas]

an adult is 3.5 inches long, this one is about 3 inches or so, I would say yes she's ready to breed or, pretty soon.

 

[Andysc1]

which ruler are you looking at Betta that looks like 30mm to me?

 

[BettaBettas]

wait is that ruler CM? I was thinking it was inches - in that case seems like its three CM but as I said, can get up to 3.5 inches.

 

[Munroco]

Looks nice and plump anyway, could be she is ready

 

[0_Infinite_0]

Sorry guys, I forgot to mention the top of the ruler is in cm!