Zoanthid polyps are usually small, a few millimeters to a few centimeters in height but some can grow quite large such as Protopalythoa grandis and the solitary Isozoanthus giganteus, which can reach lengths of 19 cm (Hyman, 1940). The column of the polyp is divided into the tube-like scapus and the cap-like capitulum. Polyp walls consist of a thick cuticle that overlays the ectodermis. Between the ectodermis and the endoclermis lies a
Anatomy of a typical zoanthid colony.
After Hyman 1940
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The word aquarium originates from the ancient Latin language, aqua meaning water and the suffix rium meaning place or building. Aquariums are beautiful and look good anywhere! Home aquariums are becoming more and more popular, it is a hobby that many people are flocking too and fish shops are on the rise. Fish are generally easy to keep although do they need quite a bit of attention. Puppies and kittens were the typical pet but now fish are becoming more and more frequent in house holds. In recent years fish shops have noticed a great increase in the rise of people wanting to purchase aquariums and fish, the boom has been great for local shops as the fish industry hasnt been such a great industry before now.