Koi Fish

For koi fish, NorthFin provides excellent food options that support their size, long lifespan, and vibrant coloration.

The best daily choice is the NorthFin Koi Formula, available in floating pellets (typically 3mm to 6mm), specially designed for the dietary needs of koi. It contains high-quality ingredients like whole krill, herring meal, spirulina, and kelp, which help boost immune health, promote color vibrancy, and support steady growth. 

Because koi are omnivorous grazers, it’s also beneficial to include NorthFin Kelp Wafers a few times per week to provide additional plant matter and aid in digestion. 

A good feeding schedule for koi would be:

• Daily (when water temp is above 15°C): Feed NorthFin Koi Formula once or twice a day in small amounts that they consume within 1–2 minutes.
• 2–3 times per week: Add NorthFin Kelp Wafers for fiber and variety in their diet.