What do baby koi look like?

According to Cuttlebrook Koi Farm, baby koi look similar to adult koi but much smaller. Baby koi also have variable color patterns compared to adults, and they may change in appearance significantly by the time they reach adulthood.

Koi eat anything that fits in their mouth, so baby koi must be kept separate from adults unless they are large enough to avoid being eaten, says Cuttlebrook Koi Farm. Additionally, young koi are very sensitive to water quality and require well-filtered water at all times, which is challenging because they are often small enough to be sucked up into conventional filters.