Homeland ancistrus — mountain rivers of South America. This is a small, length to 10 cm fish, unpretentious and practically omnivorous. Aquarists love them for their helpful ability to clean the glass from build-up of algae.
The content of Ancistrus in the home aquarium
The minimum volume of the aquarium is 25 gallons per fish, ideally with one adult male should fall between 100 and 120 liters of water. Because females are usually peaceful and calm ancistrus ready to fight to the death.
Ancistrus prefer densely planted aquariums with greenery, with plenty of shelters. To build them from scraps of pipes, pottery shards, glued rocks, driftwood. Fish are holding near one of the shelters and drive away competitors. A special activity they show in the evening. Source: ancistrus Continue reading
In the seas and oceans of our planet are populated with over 21000 species of fish. About ten percent of them belong to the industrial types. Breeding allows you to obtain not only the fish as a commodity, it is the raw material for the production of medicines, fertilizers, pet food. Industrial fish are divided into freshwater and marine.
Freshwater species are fish that inhabit the ponds, lakes, rivers. The main industrial freshwater fish species are catfish, carp, perch. To artificial breeding of well adapted to black bass, trout, carp, Amur, silver carp. Such kinds of fish as pike, perch, catfish, carp, crucian carp, bream, take the first place in terms of industrial production in our country.
Particularly valuable of freshwater species of fish are:
sturgeon and stellate sturgeon, Beluga, sturgeon, this species of fish has a very tasty and fatty meat, and from them collect valuable Beluga caviar;
salmon – humpback salmon, chum salmon, Steelhead, these fish species are given, in addition to high demand of red caviar, delicious meat. Continue reading
Sharks are found in open and coastal ocean waters. These mysterious creatures appeared on Earth 400 million barrels. years ago. Belong to cartilaginous fish. as their skeleton consists of cartilage. Cartilage is durable, and unlike the bones of fish, more flexible and light. They have no swim bladder. Afloat fish holds, thanks to its large but lightweight the liver. Her need to constantly move in order not to drown.
She swims, arching his whole body from side to side. Almost all of them when hunting using the electric field. Sharks capture him with the help of numerous electrical sensors that are on her face.
Many of them, it is not strange, they eat plankton. Plankton is a conglomeration of various microscopic and small organisms. Mainly unicellular plankton contains algae, which absorb solar energy, thereby transforming inorganic substances into organic food. Continue reading