Help Sex'n Rainbow

[Pleco]

It is an Australian Rainbow, but im having a hard time sexing it. Can someone that knows how to sex a rainbow help here? I am thinking Female but it is only around 3-5 months old right now.

Thanks
-Pleco

 

[toddnbecka]

Males have a taller profile than females, that one looks like a female.

 

[rkilling1]

in males, the anal fin will extend to the caudal fin. since this ones anal fin only goes to the caudal peduncle, I would also say that it is a female.

 

[newfound77951]

I agree, but I use yet a third way to ID rainbows....in the males I have, the first (smaller) dorsal fin, when folded down, reaches to or past the start of the second dorsal fin. In the females it does not. My turquoise rainbows show no difference in where the anal fin ends in relation to the tail (and mine are big enough that it is very obvious which are the males and which are the females, by color and profile)

Pretty fish, btw!