That Fish Blog – Aquarium Advice and Information

Almost every saltwater aquarium that has had live rock or corals has bristleworms. They may not be obvious, you may not see them, but chances are that they are there…and their “attacks” are some of the most common injuries that hobbyists encounter. Read More »

This week I would like to take a look at another annoying pest in the reef tank, the zoanthid eating nudibranch.  The zoanthid eating nudibranch is much like the soft coral eating nudibranch in both body shape and difficulty to find and eliminate.  The zoanthid eaters usually belongs to the famliy Aeolidia.  They are built much the same as the soft coral eating nudibranch, with cerata or finger-like growths that grow on their dorsal side.  These growths allow them to blend with the zoanthids, making them difficult to see as they feed on your polyps.  These nudis are usually small, ranging in size from 1 millimeter to 1 centimeter in length, which also makes them very difficult to detect and remove from polyp colonies.  They tend to hang on to the underside of the polyp and remain hidden.  Read More »

Owning a reef tank is a really rewarding hobby, but it can be challenging at times.  Besides keeping the water chemistry in good condition, there are other problems that can harm the coral and cause damage to your reef. There are many different corals and therefore many different pests that may prey on each species.  A lot of invertebrates in the ocean evolve to only eat a specific food item. This is the case for many of the nudibranchs, and many have adapted to be coral eating nudibranchs.  As a reef keeper there is a possibility that you will encounter Zooanthid eating nudibranchs, aptasia eating nudibranchs, soft coral eating nudibranchs, and hard coral eating nudibranchs to name a few. Today, I want to discuss is the soft coral eating type.  Read More »