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
MARINE AQUARIUM, a vessel for keeping marine animals and plants. Is usually large in size (200 litres), as its inhabitants usually larger than the inhabitants of freshwater aquariums.
Compared to freshwater marine aquarium is more time-consuming in use, since the secret of the successful maintenance of marine fish is the maintenance of conditions corresponding to their natural habitat. Often contain well-dressed inhabitants of tropical coral reefs. It is interesting to contain cold-water marine life. Such an aquarium should be in the summer especially cool.
Sea water is prepared artificially by division or from commercially available ready mixes for marine aquariums. It must have a salinity of 30-35‰, pH of 8.0 to 8.4, temperature depending on the content types. You need a constant control of temperature, pH, density (measured by hydrometer) and water salinity. Most dangerous is the accumulation of toxins in the water due to protein contamination. To combat protein contamination need a strong filtration system and water reclamation, as well as weekly substitution is not less than a quarter of the fresh water well preferirana water of the same density. The destruction of proteins contribute to aquarium lighting UV lamps and ozonation of water. Primenjajutsja special tools — catchers protein. Continue reading
Venezuela is one of the best and most visited places for sport fishing in the world. Here is a great opportunity, both for marine and for freshwater fishing.
Based on the opinions of most anglers, the best fishing occurs in Venezuela on lake Guri. Lake Guri is one of the largest artificial lakes in the world (about 175 km long and 48 km wide). It appeared in the construction of a dam on the river Caroni, a tributary of the great Orinoco. Favorable ecological situation and perfect conditions for fish to have made this place very popular among fishing enthusiasts from all over the world. Of special interest on the lake is fishing in a strong and aggressive tropical peacock bass pavón (average specimen weighs about 5 kg) and predatory fish Paru – distant relative of the piranha that inhabit the Amazon and Orinoco.
Another popular fishing spot in Venezuela is located in the district of waterfalls ARIMA (river Paragua), in the state of Bolivar in South-East of the country. Here you catch Paro and Aymara. It was here that they caught the largest specimen of Para (weight was 17.8 kg) and thus set a world record IGFA. The best time for fishing is from January to may. Continue reading