HCA: Hermit Crab Association

Astaxanthin 
Definition - a strong pigment molecule that is usually found in rich red foods.
Function - enhances color in land hermit crab's exoskeleton and aids in keeping organ systems and bodily functions healthy.
Foods - krill, plankton, red seaweeds, shrimp

Beta Carotene
Definition - an orange and red pigment molecule that is found in brightly-colored foods.
Function - enhances red and orange color in hermit crab's exoskeleton and is processed into Vitamin A in a hermit crab's body
Foods - apricots, bell pepper (red, orange, and yellow), blueberry, broccoli, cantaloupe, carrot, chard, cilantro (raw), collard greens, dandelion greens (raw), lettuce (dark), mango, microalgaes, papaya, parsley (raw), passionfruit, peaches, peas, persimmon, pineapple, pumpkin, snap beans (raw), spinach, spirulina, squash, seaweeds, sweet potato

GotButterflies wrote:He looks to me like he is missing two legs.

Sometimes their color will darken a few weeks after they come up

Congrats on the big pincher growing back little Kermie!