Refined nutrition for the healthy, harmonious development of tosai.

KiGen Tosai Premium Koi Food is a high-quality growth food developed specifically for young koi during their most important development phase. Designed to support intensive but controlled development, KiGen Tosai helps promote rapid harmonious growth, strong skeletal structure, balanced body shape and healthy early-stage development.

This premium formula is ideal for koi keepers who want to develop young koi correctly from an early stage, supporting not just size, but proportion, strength, health and long-term quality.

Key Benefits

Supports healthy development of young koi
Encourages rapid but balanced growth
Helps develop strong skeletal structure
Supports harmonious body development
High protein and mineral levels for young koi
Enriched with Enzym+ to support phosphorus absorption
Ideal for serious hobbyists and grow-on systems

Why Choose KiGen Tosai?

Young koi have different nutritional demands to mature koi. KiGen Tosai has been formulated with elevated protein and mineral levels to support young koi during their key growth phase, helping them develop steadily without compromising balance or overall health.

The formula is enriched with Enzym+, which helps improve phosphorus absorption and supports the development of strong skeletal structure. This is especially important for tosai, where correct early nutrition can play a key role in future body shape, strength and long-term development.

Product Details

Pellet Type: Floating
Pellet Size: 3mm
Available Sizes: 1.2kg and 5kg
Best For: Tosai and young growing koi
Feeding Season: Best used during active feeding and grow-on periods

Feeding Advice

Feed according to water temperature, oxygen levels, filtration capacity and fish activity. KiGen recommends conservative feeding rates, with feeding reduced immediately if ammonia or nitrite levels rise.