I've never tried Grand Sumo, not easy to find here in Thailand weirdly enough. Protein level is a tad high (so good to also feed other lower protein pellets), but ingredient list (if comletely listed) looks pretty darn good imho, no corn, wheat or soybean fillers:
Ingredients
White Fish Meal, Krill and Shrimp Meal, Seaweed Meal, Spirulina, Omega 3 & 6 HUFA, Fish Liver Oil, Brewer’s Dried YEast, Rich Amino Acids (PHE, His, Iso, Leu, Arg, Trp, Met, Lys), Vitamin A,D,E, Riboflavin, Niacin,B6,B12,Biotin,Stabilized Vitamin C and Minerals (Ca,Cl,K,Na,P.Mg,ZN,MN,Cu,Se), Beta-Carotene, Astaxanthin, Cantazanthin, Phycocynin, Xanthophyl.
Guaranteed Content Analysis
Min Crude Protein 45%
Max Ash 12.8%
Max Moisture 6.5%
Max Crude Fiber 3.5%
Max Crude Fat 3%
But I don't understand what they're using as binders & fillers, the seaweed meal & brewer's dried yeast, or is something missing from the listing?