Bristlenose Sexing

[DaveA76]

hi i currently have 5 bn in my tank (roma 240) all from different sources as i wanted to form a breeding pair the biggest is a male for definate as his head is full of bristles that split at the ends and he has just hatched off around 30 eggs in a coconut cave which i have now moved on to a hatchery and have just purchased a little tank to grow them on,
now 4 of them are common and 1 albino all 4 common have bristles in a line up there top nose as well as around the top lip, 1 is as stated definate a male and is about 5 inch, the other 4 are between 3.5 + 4 inch
the albinio has no bristles at all, suspected female
now if the dad is a common and the mum is the albino what colour will the babies turn out ?

 

[DaveA76]

bump

 

[MBOU]

I cant remember the genetics for how it all carries but 50/50 albinos and normals het for albino. (so normal het albino bred to albino will mean 75% albino babies etc).

I think still waiting for my albino/normal pairs to breed *sigh* must be the only person in the world who cant convince bristlenose to breed!!

Female bristlenoses do still get 'stubble' bristles but not the full on face full of bristles like the male.

Personally, i think the more you have, the easier they are to sex! Easiest way i found was to use a clear plastic tub with a little water in, add ples and look at them from underneath. The males have a longer and narrower face, like an upside down V whereas the females have a more rounded face like an upside down U. Easiest to tell from underneath and when you have several to compare them to each other!

 

[barrycuda]

easy to sex just by looking at bristles. will be abit hard if they are too young though.
males obviously have heaps of bristles, females tiny short ones on the side of the head.

i have a brown male and golden female and the babies turn out brown. would be the same for albinos.