L200,boy or girl?

[Nx7]

My tank

[MatsP]

Very difficult to say. Let it grow out a bit, and it should become very obvious.

If it's the fish at the bottom back, I'd say it's a far bit younger/smaller than it needs to be to allow the sexing of the fish - I'd say it's about 8-10cm (3-4") total length, which means that it's probably at least a year away from being easily sexable. They need to be about 13-15 cm (5-6") total length to be sexable, and they grow 2-5cm per year when young and given good conditions.

It _MAY_ be possible to pick out males/females in a group of fish around 8-10 cm fish, because you can see from the size/shape of the fish - particularly the head - which are male and female. But a single fish on it's own is near impossible to tell.

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Mats

[Nx7]

Actually it's 13cm now,I've taken measurement of its length
I think it's an adult

[MatsP]

Actually it's 13cm now,I've taken measurement of its length
I think it's an adult

I think it's the equivalent of a human "teenager", and as you may know, some teenagers are very mature at an early age, and others are not...

A clear, close-up from above would help. And it's ALWAYS easier to tell if there is a group.

I have L128, which is very similar, and my largest fishes are about 15cm TL, and the male I have is clearly showing that the pectoral and interopercular odontodes (hair/spikes).

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Mats