Can't see anything. As for flowerhorn food, the best thing is a variety of food. But keep pellets are your flowerhorn's staple food. The best pellet I would recon are listed in order are NLS(New Life Spectrum), Ching Mix, Grand Sumo, A-Life, and Hikary Bio-Gold or just Gold would be fine.
Feed them a variety of frozen blood worms and frozen krills. Please try to avoid any live food and freeze dried.