I bought 4 F1 yellow dovii fry from Ira a month ago. The batch was 2 weeks old back then. Two of my batch were runts, barely grew, and naturally died off. The two left are strong willed and have been eating like Oscars do. They have grown so much. They eat crushed Ken's 2.0mm growth pellet and bits of bloodworm. They already have their black stripes on the side although it changes with their mood. The smaller one I fear is the male because he runs the tank and is very territorial. He will swim across the tank to run after his bigger counterpart. He is going to be one SOB glassbanger when he's older.
Here are some pics (excuse some of the bluriness: they are very fast) :