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Can you say If I have 1 male 3 females?
There are 4 of them, size 3.5-4 cm ( I am not sure ).

Green lasers are difficult to sex with 100% accuracy if the females are not completely loaded, but I'd say the big fish on the top pic is a shure female and the other three fish could be males.

Hi,

I also think you have 1 female and 3 males.
When I look at mine I also see the females have a slightly longer head and are somewhat longer in there body. Males are slender body shaped then females.

Are you going to try and breed them?

Good luck and enjoy your little green friends!!

Greets Jacqueline

It looks like 1 girl, 3 boys, but fatten them up a bit and you will know for sure , there is one that could be an immature female (:

jac wrote:Hi,
Are you going to try and breed them?

I have fry from them , but 1-2 months ago I've lost one of them (I think It was female) and they stopped to breed.
I'am going to extend my colony with this fry.

I have 3 small L66 in this tank, would it stop corys to breed?

Hi,

I don't think that the small L66 would stop them to breed unless you adapt the temperature according to the needs of Hyancistrus species.
These two species don't fit, green stripes seem to need cold water to breed (below 25°C) and L66 need warm water (above 25°C).

Regards,
Karsten