These are marine invertebrates proven to be hardy, undemanding, and well-suited for the beginning hobbyist. What must be watched is the salt level in your aquarium (salinity) as Inverts are the first creature to die if these are not correct. Starfish and Fan Worms do best in well-established aquariums. The diet of some inverts should be supplemented with foods designed for filter-feeding invertebrates.
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