Spoon-billed cat (Latin Polyodon spathula)
the Spoon-billed cat (Latin Polyodon spathula)
the Spoon-billed cat (Latin Polyodon spathula) - quite big fish of group of osetroobrazny (Asipenseriformes), families spoon-billed cats (Polyodontidae). The spoon-billed cat always draws attention of visitors of the Aquarium with the unusual look. A snout (rostrum) at it very wide, flat and long, a vesloobrazny or xiphoidal form from where also the name went. Jaws are armed with numerous small teeth. The body extended, progonisty, naked or covered with very small separate bone plaques.
In nature the Spoon-billed cat meets in the Mississippi, its inflows of Ohio, Missouri, Illinois and other rivers flowing into the Gulf of Mexico and also in a number of the lakes connected with the basin of Mississippi.
the Spoon-billed cat - the only look osetroobrazny, eating on plankton. Floating in the thickness of water with widely open mouth, it ottsezhivat by means of long and frequent branchiate stamens of pelagic Crustacea; at the same time the flat snout plays as if a canopy role. It is called very neatly a live planktonic grid. Much less often in a diet of Spoon-billed cats larvae of insects meet.
In the development can reach the Spoon-billed cat to 83 kg of weight and 2 m of length.
in the middle of 1970 - x a spoon-billed cat is delivered in the USSR and contains in fish-breeding farms where successfully ripens and gives posterity.
As object of trade a spoon-billed cat is known in the USA since the end of the XIX century when after sharp falling of ulov of lake and Atlantic sturgeons, it became the main source of production of black caviar. The maximum catch of a spoon-billed cat fell on the beginning of the XX century, trade was more than 1100 t at this time. Still in 30 - e years of the XX century in the USA annually went on sale to 4 t of caviar of a spoon-billed cat. For the last century the area of dwelling of a spoon-billed cat was reduced.
of Mississippi, its inflows to Ohio, Missouri, Illinois and other rivers flowing into the Gulf of Mexico, and also a number of the lakes connected with the basin of Mississippi.
Spawning begins in April - May when water temperature becomes 14-16 °C. Lays caviar for soil at a depth about 5 meters (82-290 thousand berries).
Contents in the Alushtinsky Aquarium:
Optimum temperature at the maintenance of a spoon-billed cat - 22 - 25 °C. Contains in fresh water. Proceeding from the sizes of fish
quite big aquarium is necessary.