I never fed fruit. Mine liked ONF2 pellets, algae wafers, zucchini, baby spinach, Romaine, and occasionally frozen peas. I didn't do anything to soften the Romaine or spinach -- they'd eat it as-is right out of the fridge. You'll have to soften the zucchini a bit. The peas I just defrosted in water and then popped to remove the outer hull.