Purina Mills Aquamax Pond Fish 2000, 32 Percent Protein, 5/16"(7.9mm) Floating Pellet For Catfish, Tilapia, Large Koi And Goldfish, Carp, And Many Other Omnivorous Fish That Normally Populate Ponds 16 Ounces A High Performance, Plant Protein Based Diet To Promote Maximum Growth InModerate To High Density Tank And Pond Production Farming Of Tilapia &Other Omnivorous Fish. At 32% Protein And 3% Fat, Problems Are Avoided Such AsExcessive Fat Deposition In The Liver, Which Can Decrease The Health And MarketQuality Of The Fish. A Low Nitrogen to Phosphorous Ratio Reduces WaterPollution.Extruded Pellets Have The Best Digestibility Of The 3 Pellet ManufacturingTechniques(Extruded, Expanded, Compressed/Steam), The Best Feed ConversionRates, And Use Carbohydrates As Binders So "Nutritionally Blank"Ingredients Are Not Required To Bind The Pellet. Better Feed Conversions AndReduction In Total Biological Load In The Water Column Is The Result.For Tilapia Weighing 50 Grams(1.75oz) To Harvest Size &gt; For Catfish 4Inches To 14.4 Inches &gt; For Koi Greater Than 12 Inches. The General Rule ForChoosing A Feed Size Is To Deliver The Largest Size That The Smallest Fish WillEat. The Proper Feed Size Can Also Be Selected By Comparison Of Feed Size ToMouth Gape Size, Gill-Raker Spacing, And Esophagus Width. 1 Pound Of Feed Heat Sealed In A Resealable(zip) Mylar Stand-Up Pouch WithGas Valve.