Tetra Crusta Sticks is a staple food for shrimps and crayfish - for a species-appropriate diet.+ the rapidly sinking sticks with a high proportion of wheat germ ensure a balanced diet + due to their dimensional stability they enable natural eating behaviour and do not pollute the water + their optimum content of proteins and minerals ensures a healthy moult + vegetable ingredients and essential vitamins strengthen the resistance.Recommended feeding with Tetra Crusta Sticks:Feed only as much as the shrimps or crabs can eat within one hour.