I don't know if this problem persists in 1.7.2, but in 1.6.4 i can't use ae to automatically feed fish eggs into the incubator since the "fake" items inside the export bus are becoming "fake" fishes ower the time.

I don't care if you don't fix it for 1.6.4, but if its persists in 1.7.2 then try fix it.

It shouldn't be possible in the 1.7 version as fish eggs are a seperate item entirely.

So it don't has the possibility to hatch within the ae export bus after i set it to export fish eggs?

Correct. I doubt it's hatching... Just the metadata got messed up.