Thank for that.
I had a feeling my fry were not growing properly. 1 1/4" after 6 months.
Most would die within a couple of weeks. They would go pale shortly before dieing. See photo.

I have tried them in a hatchery in the main tank for the first month and i have also tried them in a tank of there own.
There has been a better survival rate using the hatchery.
Even when i raise them in there own tank and place some fry of L66, Ancistrus Claro and some Galaxy rasbora. The only one's i have the trouble with are the L411.
The water i tried them in ranged from PH6- 6.5, GH <1dh- 2.2, TDS 55- 80 ppm and temp. 26.5- 28c .
Water pressure has been taken in to account. Water is added the same time as left over food is syphoned out.
First food Tetra tabimin, then brine shrimp, cyclops, lobster eggs, microworms and verious ground up wafers.
I will try the Doramin. Thanks