You’ll get a nice mix of koi in the 3”-10” size range. Butterfly and standard fin (approx half and half). This is a great deal to stock a larger pond with koi. 

The average size per fish will be 5-8”, I am very fair and make sure you get a great mix. It’s NOT like you’ll get 70 3” koi, a few 6”, and one 10”. Exact numbers of each size vary depending on availability.