I currently have four fish in my grow out tank, two from Central America and two from South America, The ones from South America are an Oscar and a Severum, and the two from Central America are a Jack Dempsey and a Black Convict. The convict and Dempsey refuse to eat small Omega One pellets, and will only eat flakes, the South American ones eat it selfishly. So I was wondering if you could give me some ideas on how to convert them to pellets.