10 mixed size zebra isopods.
Maculatum are an easier spiecies to keep and reproduce readily but are slower growers than some of the other species. I have seen some variatiations pop up I my cultures such as individuals that have broken lines and appear spotted, individuals that have yellow stripes instead of white, individuals that are chocolate colored instead of black, and also pure white individuals. The zebras you order are from these cultures so you also have the chance that these mutations appear in your young.
I have multiple cultures of these going, one of which the adults were selected for full unbroken stripes. If you prefer classic over a mix please note in the comments when you check out.