Common name: lettuce slug

General information

The Lettuce Sea Slug, scientifically known as Elysia crispata, is a striking marine invertebrate popular among reef aquarium enthusiasts. Its name derives from the ruffled, leaf-like appendages on its body that resemble lettuce leaves. These appendages increase the surface area for photosynthesis, as this species harbors symbiotic algae called zooxanthellae within its tissues.

This species is not only admired for its unique appearance but also for its contribution to algae control in the aquarium. It feeds on algae, which can help maintain a clean and balanced tank environment.

Care

Lettuce Sea Slugs are relatively easy to care for, provided their specific needs are met. They require a well-established aquarium with plenty of live rock and algae growth to graze on. It's important to ensure that the tank has a stable environment with high water quality, as these invertebrates are sensitive to changes in water parameters.

Reproduction

In captivity, reproduction of Elysia crispata can occur, with individuals being hermaphroditic, possessing both male and female reproductive organs. They lay egg masses that can hatch into larvae, which will eventually settle and metamorphose into juvenile sea slugs.

Habitat

The natural habitat of the Lettuce Sea Slug includes the tropical waters of the Caribbean Sea and the Gulf of Mexico. They are typically found in shallow waters, grazing on algae-covered surfaces.

Their presence in a reef tank can add a touch of natural beauty and contribute to the ecosystem's health by controlling algae growth.