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