Prepare the Vegetables: Start by blanching the spinach or kale in boiling water for about 1-2 minutes. Thaw the peas and cook the carrots until they are soft. Chop all the vegetables finely.

Cook the Protein: Cook the shrimp or fish fillets until fully cooked, then chop them into small pieces. If using garlic, chop it finely.

Blend the Ingredients: In a blender or food processor, combine the thawed peas, blanched spinach or kale, carrots, shrimp or fish fillets, and garlic. Blend until you achieve a smooth consistency. You can add a small amount of water to help with blending.

Add Gelatin: In a small saucepan, dissolve the unflavored gelatin in a few tablespoons of hot water. Stir until fully dissolved. Add this gelatin mixture to the blended ingredients and mix well. The gelatin helps to bind the ingredients together, making it easier to form the food into small, fish-friendly pieces.

Add Fish Flakes or Pellets (Optional): If you want to boost the nutritional content, you can mix in some fish flakes or pellets. This adds extra vitamins and minerals to the food.

Mold the Food: Pour the mixture into ice cube trays or spread it thinly on a baking sheet lined with parchment paper. Place it in the refrigerator to set. Once set, you can cut the food into small pieces appropriate for your fish.

Feed Your Fish: Once the food is ready, store it in an airtight container in the refrigerator for up to a week or freeze it for longer storage. When feeding, drop a small piece into the tank and watch your fish enjoy their homemade meal.