Aeromonosis (German measles) is a disease that causes hemorrhagic inflammation of the skin, accompanied by ulceration, and visceral and abdominal dropsy.
Pathogen — Aeromonas punctate. This movable rod with a polar flagellum, is a facultative aerobe. Spores and capsules do not form it.
Ehpizootologicheskaja data. Sick aeromonosis carp, carp, silver and Golden crucian carp, tench, bream, roach, especially under the age of 2 years.
The disease is widely distributed in fish farms European countries, the USA, and also in the CIS and the Russian Federation. It usually occurs in the spring and summer (may—June). Fish kills there may be up to 25-90%.
The source of the pathogen are sick individuals, individuals-microporosity. Continue reading
Monkfish, monkfish or European (lat. Lophius piscatorius) is a predatory fish squad udenstvertne. The name “monkfish” this was due to a very unattractive appearance.
The fish is edible. The meat is white, dense and boneless. Especially popular are “monkfish” in France.
Body length up to 2 meters, often 1-1. 5 meters. Weight — up to 20 kilograms or more. The anglerfish’s body naked, covered with numerous leathery outgrowths and osseous tubercles. On both sides of the head, on the edge of the jaw and lips fringed hanging shreds of skin, wiggling in the water, like algae, making it barely visible on the ground.
Body flattened, compressed in dorso-ventral direction. Head flat, broad, flattened on top, with approximately two-thirds of the length of the whole body. Continue reading
Everyone knows what a great white shark, but only a few know that she has another name, namely carcharodon . It is not only the largest shark but also the most blood-thirsty of all members of this genus. The adult can grow up to 8 meters. Many people call it “white death” because these predators often attack swimmers.
The shark lives in warm or temperate waters of the World ocean, and swims at a depth of about 30 meters. Spin shark is not white, but rather grey, but sometimes grey. Her abdomen dirty white color, while the dorsal fin is black. Only large specimens are completely lead-white.
Most often the great white shark looking for a prey, slowly cruising around the sea surface. Due to the fact that she has poorly developed eyesight, she goes hunting in the daytime. Continue reading
If after the acquisition of goldfish were quarantined and were settled in good terms, and if they are sick, usually due to overfeeding. Gold young can be fed a couple times a day, adults – it only takes one time. These fish have very good appetite and overfeed them very easily, so it is advisable to use fodder with low protein content and with the addition of herbal ingredients, like spirulina. Moreover, special feeds for goldfish on sale now abound. For example, I feed my Golden balls Tetra Goldfish Colour Sticks, and twice a week live food. Bloodworms and Tubifex, as the permanent feed is not suitable – too “fatty”. It is desirable to let the aquarium duckweed or Ricci, a very respected gold this grass and can choose to diversify your diet.
What are the symptoms of overfeeding in goldfish? Belly fish like bursting and she can’t cope with their movement. In this case, you need to give her a hunger strike for three days, may relieve the bowels. After that, of course, you need to learn a lesson and more fish is not to overfeed. Continue reading
In 1897, together with the biological station was founded Sevastopol marine Aquarium-Museum. The first building of the biological station has survived. Although, it is known that it was organized on the initiative of A. O. Kovalevskiy and the famous scientist traveler N. N. Miklukho-Maklai in 1871. Headed the Sevastopol biological station of A. O. Kovalevsky – the academician of the Imperial Academy of Sciences. He became its Director. It was A. O. Kovalevsky became the initiator and Builder of the new building of the biological station and marine Aquarium, on the site of the destroyed Nikolaev battery. The author of the project of the building was designed by Alexander Weizen. The station was built in the image and likeness of the biological stations of Naples and Villafranca. Subsequently, the Sevastopol biological station, expanding its efforts to study the flora and fauna of the seas, grew into the Institute of biology of southern seas named Kovalevsky. Also, was established the Prize named after A. O. Kovalevsky. Now This prize is awarded for outstanding achievements in the field of Parasitology and Zoology of the Russian Academy of Sciences. Continue reading