Scientific name - Elysia crispate Family - Elysiidae Common name – Lettuce Sea Slug Max Size – 3 in (7.5 cm) Range - Atlantic Ocean Care Level – Difficult Temperament – Peaceful Foods and feeding – This nudibranch will only eat Bryopsis sp. algae, and will starve when this food source is gone. Aquarium suitability - Reef compatibility – Yes Captive care – Interestingly, this nudibranch incorporates the chloroplasts from the algae it eats into its tissues, and partly relies on photosynthesis. This nudibranch only feeds on Bryopsis sp. algae and can be used to manage an infestation. But you should be able to return or rehome this nudibranch because they will starve when the infestations Is gone. They are active at night. Like all inverts, nudibranches require pristine water conditions and small amounts of nitrates or copper are fatal to them.