A very popular Nano aquarium crustacean is the sexy shrimp, Thor amboinensis. These shrimp hold their abdomens straight up and wave them back and forth, which is how they got their name. These diminutive shrimp only grow to a little over an inch in length. In the wild they live among the tentacles of anemones, but will live on Ricordea or other mushroom corals in the aquarium. They are very peaceful shrimp and may be kept in groups. In the wild they eat the mucous from their host anemone and any food that gets stuck to the tentacles. In an aquarium, they will eat meaty foods like frozen mysis, cyclops, or brine shrimp.