API® All Varieties Goldfish Flakes. Ensure your goldfish thrives with API® All Varieties Goldfish Flakes, a nutrient-rich and complete diet available in 1.1 Oz and 5.7 Oz containers. This high-quality food is specially formulated to promote optimal growth and vibrant colors, thanks to beneficial ingredients like spirulina algae, menhaden, and squid. The formula is designed to maximize nutrient utilization by your fish, resulting in less waste and contributing to cleaner, clearer water in your aquarium. Instructions: Feed your fish up to twice a day, sprinkling only a few flakes per fish—just the amount they can consume within three minutes—to prevent overfeeding.