Koi

Koi (Cyprinus carpio) are ornamental varieties of the common carp, originally bred in Japan for their vibrant colors and patterns. They are freshwater, cold-tolerant fish kept primarily for decorative purposes in ponds and water gardens rather than for food. Koi farming is part of the aquaculture and ornamental fish industry, with high-value specimens often sold for ornamental trade and exhibitions.

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Learn more about Koi

All feed formulas developed by Aller Aqua at the Aller Aqua Research Centre follow these requirements to ensure proper growth and health:

  • Protein Needs: Koi require a moderate to high protein diet, especially during their growth phases. Protein content in koi feed typically ranges from 30% to 40% crude protein. Proteins support muscle growth, repair, and overall health.

  • Fat and Energy Needs: Dietary fat content is generally around 5-10%, providing energy and essential fatty acids. Koi need fat for metabolic energy and to support vibrant coloration. Fish oils or plant-based oils are common sources.

  • Essential Nutrients: Koi require a balanced diet rich in vitamins (A, C, D, E, and B-complex), minerals (calcium, phosphorus, potassium, magnesium), and essential fatty acids. Additionally, carotenoids and other pigments in feed help maintain and enhance their bright colors.

  • Feeding Considerations: Koi are omnivorous and benefit from a mix of formulated pellets, live foods, and plant matter. Their metabolism slows in colder water, so protein needs decrease during winter months.

The range of solutions developed by Aller Aqua is suitable for each stage of the fish lifecycle as well as the following farming methods:

  • Pond Systems: Traditional and most common method; koi are raised in outdoor or greenhouse ponds with good filtration and aeration.

  • Tank Systems: Indoor tanks allow year-round production and easier control over water quality and breeding.

  • Recirculating Aquaculture Systems (RAS): Used in high-end koi farms for maintaining water clarity, quality, and temperature control.

  • Selective Breeding Facilities: High-value koi are bred for specific traits, requiring controlled environments and professional grading.

The following are the benefits of Koi Farming:

  • Aesthetic & Cultural Value: Koi symbolize good fortune, perseverance, and prosperity, especially in East Asian cultures.

  • High Market Value: Premium koi can fetch high prices, making them a profitable niche market in ornamental aquaculture.

  • Low-Maintenance: When properly farmed and housed, koi are hardy and long-living, often surviving for 20–30 years.

  • Eco-Friendly Farming: Koi farming has a low environmental footprint, especially when integrated into decorative pond systems.