The anemone crabs  form a symbiotic relationship with anemone but as long as there are no predators in the aquarium they will do fine without the hosting anemone. These are terrific pets for reef tank
Scientific Name: Neopetrolisthes maculatus
Max Size: 1.5"
Diet: It eats planktonic food and mucus from the anemone. It may be supplemented with tablet food placed next to the anemone.
Medium: .5-1.5"