Purchasing Healthy Specimens

When acquiring zoanthids there are a few things one should be on the look-out for. Avoid any colonies that have polyps with brown, jelly-like masses on them. This is a protozoan infection that can rapidly spread throughout an aquarium (see volume one). Zoanthids with this condition have usually been weakened in some way, making them susceptible to infection. The polyps themselves should be open and brightly coloured with no bleaching evident. If the polyps are dark brown in colour and lack bright colours such as green, orange or pink, this is often a symptom of low light levels. These colonies will usually regain their bright colours if gradually acclimated to higher light levels. Finally, inspect the colony closely for any predatory snails (e.g. Heliacus). They eat zoanthids and must be removed to avoid losing the colony.

Bright Pink Zoas


Are Snails Healthy Eat

This colony of zoanfhids is suffering from a bacterial infection and an infestation of protozoans. Such colonies often become "mushy" and die. J. Sprung

Predatory Zoanthid Snails

Heliacus sp., these snails are common on newly imported colonies of Zoanthus and Protopa-/ytoand should be removed immediately! J. Sprung

Look for white necrotic areas on the rock with the zoanthids. This may indicate a dead or dying sponge that can cause the zoanthids to die-off. Inspect the rock closely to find any fouling sponges and remove them completely. Also check for filamentous algae patches and remove these too.

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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