Paper Bubble Shell
(Bulla gouldiana) Moderate Peaceful 2" Herbivore Substrate & Rocks 30 gallons Yes 72-78° F, dKH 8-12, sg 1.020-1.025, pH 8.1-8.4 None Tan, Brown Eastern Pacific Bullidae Sea Slugs The Paper Bubble Shell resembles a snail at first glance with its tan mottled shell and very large mantle that can be withdrawn into the shell. However, this invertebrate is actually a Sea Slug, in a class called the Headshield Slugs, which have developed this hard shell on their back in which they use to bury themselves in the substrate. Paper Bubble Shell slugs are reef safe, and are an excellent addition to any saltwater reef or fish aquarium. The Paper Bubble Shell is sought after in marine aquariums because it eats large amounts of algae and diatoms. A well-established marine aquarium with plenty of live rock and microalgae is a good environment for to house sea slugs. Nitrates should be kept at low levels and it should never be exposed to copper-based medications. Unlike many other Sea Slugs the Paper Bubble Shell does not release toxins into the water when threatened, but instead uses its hardened shell as protection. Little is known about the reproduction habits of the Paper Bubble Shell, but they may reproduce in the marine aquarium given an adequate food source. If insufficient forms of algae or diatoms are not present in the aquarium, the Papper Bubble Shells diet will need to be supplemented with dried seaweed or equivalent food sources.
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Lettuce Sea Slug
(Tridachia crispata) Moderate Peaceful 3" Herbivore Substrate 55 gallons Yes 72-78° F, dKH 8-12, sg 1.020-1.025, pH 8.1-8.4 None Green, Blue, Pink Atlantic Ocean Elysiidae Sea Slugs The Lettuce Sea Slug is from the family of Sea Slugs call Nudibranchs, which have both vivid coloration and unusual (slug like) body type. Lettuce Sea Slugs are also commonly referred to as Lettuce Nudibranch, or Green Lettuce Nudibranch. Lettuce Sea Slugs have densely folded parapodia or side appendages, which give it it's lettuce like appearance and hence its common name. This common name is further enhanced by the coloration of the Lettuce Sea Slug, which is usually green or brown in color. Lettuce Sea Slugs are found in tropical reefs in the southern Atlantic and Caribbean waters. One of their more notable characteristics is a pair of stalked rhinophores or horns located at the head of the slug. Lettuce Sea Slugs will do well in aquariums where they have plenty of live rock and room to forage for algae. This species should not be kept with boisterous fish species that will pick at it or otherwise cause harm to it. However, the Lettuce Sea Slug should be right at home in most reef aquariums. Lettuce Sea Slugs can be harmed by pump intakes, drains or certain types of powerheads. It is important to cover the intakes of these devices with a screen, to keep the Lettuce Sea Slug from being sucked in and damaged or killed. Like many Invertebrates Lettuce Sea Slugs have little tolerance to high levels of nitrate in the water and no tolerance to copper being present. Lettuce Sea Slugs are herbivores and will spend their time grazing the aquarium and live rock for various types of algae. In fact, they even incorporate the chloroplasts (the portions of the cell responsible for photosynthesis) from the algae into its tissues, and thus rely on photosynthesis for part of their food intake. If adequate space, live rock and quality intense lighting is provided, this species should not need any supplemental feeding.
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