Thanks for all the advice. My achillies will not eat anything but nori. I've put in every type of flake food, made buy different companies. I've tried all the different frozen foods. I did try putting nori on a clip and at the same time add some spirilenium flake. He spits the flake out.
Now this is weird. It does not matter what kind of nori / algea sheets I put in the clip. I can put in nori from the grocery store, or I can put in any kind of Ocean Nutrition algae food. Whether it be green, red or the purple algae. The thing is when it's on the clip, he bights off a large pease and he is not able to take it in. Also my other fish eat it so fast. The next day, the pease of food that is left in the clip that the fish can't get a hold of, the achillies eats it like a shark. Now I'm thinking I need to soak the nori for several hours so it softens up. It's all most like he's an old man with his dentures out.