Yup, this stuff is really good. Protein is needed for muscle development and babies are bulking up nicely. This food would be more important for your young and juvi ones (60%), less so for the adults who are done growing and only need some protein (40%) for muscle and stuff.
But other than protein, it also has the right portions of vitamins and lipids. I also mix the diet for my discus with brine shrimp, blood worms, and live foods but I use this stuff as the staple.
Proximate analysis:
*Protein 60%
*Lipids 18%
Ash 15%
Moisture 8%
Vitamin C 1,000 ppm
Vitamin E 400 ppm
*Astaxanthin, 500 ppm ( promotes growth )