The F0 P. Fredrichsthali from Cenote Escondido are growing really fast...surprisingly so. I have two of the seven that have paired up. Pretty apparent not only with their actions...but their coloration. It looks like someone inserted batteries and are backlighting their yellow...very pretty fish. Of all of the grow out tanks, these fish are the most interactive. I have spent a lot of time hand holding shrimp while they actively nip it from my fingers. they also have NO problem coming after my fingers and hands when I have them in the tank for cleaning. VERY cool little Parachromis.