Causes: the Causative agent of this disease is Cryptocarion irritans, which is a kind of analogue of the freshwater “ihti”, parasitic on tropical marine fish. It looks similar to its freshwater counterpart, but smaller (0.5 mm), besides the horse-Shoe macronucleus cryptocaryon malorazlichimyh, while Ichthyophthirius it is visible quite clearly. But the cycles of development and lifestyle of Cryptocarion irritans and Ichthyophthirius multifiliis are the same.
Symptoms: Sick fish dotted with numerous, with a diameter of 0.5 mm, white small knobs. The infestation appears first on the fins, and later goes to the body.
Current: Cryptocarion irritans infects the gills and skin of marine fish. The causative agent is under the top layer of the epithelium is filled with a gelatinous mass of leathery bag.
This pathogen, due to the same lifestyle, same causes harm to as Ichthyophthirius multifiliis.
Treatment: Can be recommended transplanting method, ultraviolet irradiation or chemotherapy, as with Ichthyo – phthirius. Effective there is also treatment with 1.5 mg/l of copper sulfate. Continue reading
Gurnard – sea predatory fish that lives in warm seas around the world. Fish contained in the aquarium. However, for correct content you need to know the specifics of its behavior and power.
Fish of unusual shape. It has quite a large head and a long body. Head is bone plates. The pectoral fins are in the expanded form are fan-shaped. Modified rays of the pectoral fins form a kind of feet with which sea cock moves along the bottom. The color of fish is bright, dominated by red, blue, green. Especially brightly colored pectoral fins. For such a bright color the fish and got its name.
The content in the aquarium
Fish necessary for a large aquarium, the amount of which shall be not less than 100 litres per individual. Water temperature – not less than 25 degrees. Gurnard is a thermophilic fish. Continue reading
One of the most remarkable inmates of the depths. Her look is so not attractive, and bizarre. As a rule, fish-drop lives at depths of 600-800 meters. There were also instances that prefer more extreme depths, namely 1,200 meters.
Prefer to live off the coast of Australia and Tasmania.
This fish is endangered. It is very actively caught and sold by fishermen. Of course, not palatability attract customers, and its unusual appearance.
The fish-drops no muscles, it is composed entirely of a gelatinous mass which density is close to water. It is this anatomical feature allows fish to swim at great depths without spending a large amount of energy.
This fish eats everything that floats by. Generally, its diet consists of molluscs and various.
2. Sea urchin
Some of the oldest animals. They inhabit the Earth more than 500 million years. Today there are about a thousand species of sea urchins. They are divided into two large groups, called: right and wrong. Continue reading