Coral Fish and Their Diseases

coral fish

Coral fish are extremely colorful fish that live in or around coral reefs. They are also able to defend themselves against some of the most violent predators in the ocean. In many ways, they are one of the most beautiful fish to observe, but they also have one major disadvantage – their slow breeding rate.

Coral reefs evolved thousands of years ago on the sea’s surface, evolving into ecosystems where various kinds of fishes co-exist. Coral reefs form extreme ecosystems with immense biodiversity. In fact, among all the animals on earth, marine fishes rank high. Among all the myriad residents, the coral reefs stand out as very interesting and colorful to look at. It is because of these reasons that coral reefs are considered to be a precious natural resource.

Coral Fish

A colorful fish

However, despite their beauty and unique qualities, these beautiful fish are vulnerable to several threats. Two of the biggest threats to the marine environment are coral reef fishes and marine reptiles. One of the most threatening aspects of marine life is an invasion of alien crustaceans and other parasites. Aquatic crustaceans and other parasites attach themselves to fish and become part of their system. Once there, they feed on the food provided by the fish and transmit diseases to them.

Examples of such alien species are the leatherback turtle and the green sea prawn. In the past, coral reefs were thought to contain only a few varieties of fish. Thanks to the development of scientific methods of study, it has now been revealed that there are more than 2021 types of marine species in the seas. This vast diversity is due to the fact that different species of the same family live in different areas of the ocean and feed on different types of prey.


A close up of a underwater

As mentioned above, there are two main factors that contribute to the decline of corals and reefs. The first factor is overfishing, which has over depleted the natural stocks of algae and other creatures that act as a food source for the coral. Another reason is the increase of marine reptiles like snappers, tuna, and King mackerel, which eat a great amount of the coral fry. Overfishing and the resulting reduction of the food supply can drastically reduce the populations of both coral species.

There are a number of ways in which to protect the marine environment from overfishing and its resulting devastation. One of the most obvious is through preventing fishing techniques which are used to attract more fish to the area. When using baits and lures, the presence of visible external parasites is avoided. If the fish are lured with the brightly colored lure, additional predatory fish will be attracted within no time, increasing the likelihood of an attack by a venomous stingray or spit fly. Some of these types of flies have been known to attack human beings who come in contact with the fly, causing serious health consequences.

For this reason, it is important that only small fish are fished by catch. This allows the larger reef creatures which depend on the corals for food to survive. At the same time, the smaller inhabitants of the reef must be protected from direct attacks by predators. This is done through a combination of body painting, poison treatment, and physical barriers.

Bottom Line

Other types of coral fish include the common damselfish, which are naturally found in freshwater and are also capable of living in saltwater. These fish breed easily in reef environments and provide good commercial returns for aquarists. There is also a type of damselfish called blue damselfish, which is native to the Indo Pacific and is now spreading all over the world. This species is now being fished extensively for its meat, which is rich in protein and high in nutrition. It is also a delicacy food for many people.

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