Sexing Glass Catfish

[lickindip]

Is there any way to tell the difference?

i currently have 12 or 13 and would like to know

there are some where the gutsack is larger and has more of a tanny yellow colour to it where the others remain silvery ... could this be the eggs???

cheers

Lewis

[Alan]

You have picked one fish where this couldn't show up clearer.

Have a look at the airbladder.

I'm sure someone pointed tis out the other day and called it the ovaries and gonads.

You will see a different shap as long as they aren't all the same sex.

Some will be elongated and poited others will be shorter and rounded.

Now go check some of your other fish that have almost see-thru bodies.

Have a stong light behind the subject and it is rather clear which fish are which sex.

Try it on fish that you know the sex of, and confirm it for yourself using this method.

I'm sexing Apisto panduros at about 10mm, just for the fun of it.

If I wanted to do it seriously, I'd separate them.

No!!

I aren't going to tell you which are pointed and which are rounded.

Figure it out for yourself and you'll remember it better.

By the way, it is an excellent way of sexing the lighter coloured swordtails before the gonopodium or tail extension starts.

[lickindip]

so my theory of the airbladder being bigger and 'row' coloured is correct for the females???

i was thinking about putting one of these in a smaller tank alone to find out if i could get any eggs out of them ... would this be a good idea???

how long does it take for the eggs 2 hatch/ mature etc???

cheers all for viewing

Lewis

[Alan]

I have not read or heard of anyone spawning them in an aquarium.

Good luck

[lickindip]

so where do they come from??? are they all wild caught?

ive heard of people randomly finding babies in there tanks and growing them up ... as ive got a heavily populated community tank i dnt think thats gonna be happening in mine

[stimpy29]

this may help (or not )

http://fish.mongabay.com/siluridae.htm