This hermit crab assorted pack includes Dwarf Blue Leg Hermit, or Red Tip Hermit, or Yellow Tip Hermit or Zebra Hermit Crabs.They are all peaceful, reef safe, and are proficient tank cleaners and algae-eaters. In this assorted pack you may receive any of the listed hermit crab species. Additionally, they can help maintain clean sand and water quality as aerators. Like most cleaning crew species, they will only be a beneficial member of your tank as they will consume any left over foods and algae.