I use the sinking carnivore pellets, on some of my fish. If you want to feed a good pellet to your JD I would try to get him on NLS, some fish take to it right away with some it's a battle of wills. You could use the carni pellets and also feed Omega One Veggie wafers, if they are too big break them up or if it's still small (I don't rember if you said it's size) Sprulina brine shrimp is good. They are Omnivores so should have a balanced diet.