Tetra Pellets Tetra Pond Pellets is a highly palatable, complete floating food for all small and medium pond fish. It is made with BioActive formula for a healthy immune system, increased energy, and improved vitality. This food uses the finest high-quality ingredients to give your fish everything they need in a balanced diet. Available in 4 different size packs: 1 Litre / 260g Mini Pellets. 4 Litres / 1050g Mini Pellets. 1 Litre / 240g Medium Pellets. 4 Litres / 1030g Medium Pellets. Please select the required size from the drop down menu.