INVERTEBRATES
These days, more and more aquarists seem to be taking an interest in these animals.
Ecologically speaking, invertebrates represent a natural complement to fish and
plants; in visual terms, you can put on a spectacle of luminous beauty, particularly
in sea water, using anemones and corals, to which can be added small fish, either
lively or placid, but always brightly colored. There are also a few species of freshwater
mollusks and crustaceans which are easy to keep in captivity, although they are
little known and often overlooked.
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