Small C. Moori with Frontosa

Was thinking about getting a few 1 inch Blue Dolphins and put them in a 55 gallon tank to grow them out. Eventually planning on putting them in a 125 gallon tank. My issue is I have 3 2 1/4 in Frontosa's in the 55. Would they get along OK with each other. Just concerned the Frontosa's are about twice as big. thanks