Specialized Structures

In 1976, while observing photos taken of Discosoma (Rhodactis) sanctithomae in Curacao in 1973, J.C. clen Hartog noticed that stony corals adjacent to Discosoma colonies showed necrotic areas and that the corallimorphs possessed odd looking white vesicles on the tips of their marginal tentacles. Upon closer examination of

Natural Structures

preserved specimens he found that the swollen tips of these tentacles contained larger and more numerous homotrich nematocysts than "normal" marginal tentacles, and postulated that these were the result of aggressive interactions (den Hartog, 1977).

The COMPLETE guide to Aquariums

The COMPLETE guide to Aquariums

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.

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