Well it's been a while now since I posted in this thread. But I'm still attempting to breed these adorable fishes.
Just a few minutes ago I was doing some routine maintenance and noticed one interesting thing...
MY KUHLIS WAS BREEDING...I think.
I have a seriously thick layer of crystalwort (Riccia fluitans), a good 2 inches in some places, on the surface. It was full of really fat kuhlis and some not so fat. And I mean FAT, like seriously plump ones. Looked lite hot dogs with fins.
It was crawling with them right below the surface in the crystalwort.
The water is "old" and really mature and somewhat stagnant. I remembered reading somewhere that people that had successful breeding (by accident) often had neglected tanks with a low water level.
This is what I have aimed at the whole time.
I have noticed some smaller (1½") kuhlis earlier in the tank but not really paid much attention to it thinking they are stunted old ones. Going through the current population I notice an increase in fishes, meaning they have spawned a few times at least. Found around 30, starting with 10 I think.
No point in asking for photos since I didn't find anything worth photographing. Found no eggs or fishes smaller than 1-1½ inch. I heard the eggs are supposed to be green and sticky. Not easy to find in crystalwort
So, it seems they like stagnant water with a lot of maze like plants on the surface. Mission accomplished
