Catfish-the Changeling (Synodontis nigriventris)
Prevails in the regions: the basin of the Congo
Body length: 10 cm
Food: carnivorous fish
Habitat: fresh water
Catfish-shifter, or synodontis nigriventris, belongs to the family mochokidae. The homeland of this species is Africa, and to meet him in the natural environment, it is necessary to visit the Congo basin. Shifters reach a length of 10 cm inhabit fresh water and belong to the group of predatory fish.
In Europe the catfish-the shapeshifter first appeared relatively recently – in 1950 in Amsterdam. In our days the activity of this species, both in captivity and in natural conditions, are poorly understood. Continue reading
In the markets of Kiev sell amazing varieties of frozen fish
Walking through food markets of Kyiv, it is impossible not to pay attention to the diversity of species of frozen fish sold on the open points. There is a range around the world, ranging from herring and hake and ending with tuna, womera, seaweed and caviar.
Fantasy fish sellers will not leave indifferent person a little razbirauschegosya varieties of ocean fish and fish aquaculture production.
Among the many species first catch the eye: blue hake, Royal hake, silver hake, shrimp, sea catfish, and of course fish elephant.
Now let’s try to decipher what is hidden under these trade names invented by creative sellers of fish.
Let’s start with the diversity of Chekov. In nature is found many species of hake European hake (hake) – Merluccius merluccius, silver hake M. bilinearis, Cape M. capensis. Pacific – M. productus. Chilean M. gayi. new Zealand – M. australis. the Argentine M. hubbsi. M. senegalensis Senegalese. and M. angustimanus. M. albidus. M. polii. M. paradoxus . Continue reading
Sea dragon — Trachinus draco
Dragon, Scorpid, dragon (no.)
Sea dragon – Trachinus draco
Sea dragon is the only representative of the family of the Drakensberg (Trachinidae) in the Black sea. Characterized by low elongated body covered with dense small scales. On the head of a sea dragon there are several spikes, the largest of them is located on the operculum and sent back. The first of two dorsal fins with a black spot, short, and consists of 6-7 spiny rays. The body color is gray or yellow with oblique bands on flanks, fins greenish, the tail on the falling edge of almost black. In the Black sea dragon lives everywhere known cases of arrest in the Kerch Strait. In the coastal zone of the Crimea the sea dragon is most common from may to November at depths up to 20 m, deeper in winter is kept. Continue reading
Seahorse refers to ray-finned fish. Forms a genus in which there are 54 species. They live in shallow waters in tropical and subtropical marine waters worldwide. In the Pacific ocean are found from North to South America. In the Atlantic from Nova Scotia and further South. There is a colony at the mouths of the European rivers. For example, in the Thames. Three species live in the Mediterranean sea.
Body length varies from 1.5 to 35 cm External appearance resembles a chess knight. The skin is thin and stretched bony plates in the form of rings. Each type have their number of rings. The neck is flexible and well expressed. For seahorses is characterized by vertical rather than horizontal movement in the water. They tremble dorsal fin and pectoral fins behind the eyes.
This is the most slow swimming fish in the world. Their top speed is 2-1,5 km/h. Caudal fin not. These bad swimmers most of the time are stationary, hooked prehensile tails for marine vegetation. Snout long and tubular end stigma. It works like a pipette, drawing the food along with water. Eyes have the ability to move, independently from each other. Continue reading
In recent years it has become fashionable and prestigious dacha or cottage on a plot to equip a pond. Of course the owner of this pond I want to breathe new life into them. The simplest solution is to run them in fish. And then the question arises, – what?
Categories of fishes can be divided into two types – decorative and domestic.
To include ornamental goldfish and koi carp. Goldfish is relatively small. Grow up to 30 cm koi can grow up to 60-80 cm unfortunately, not every breed of goldfish perfect for a pond. In open water may be in the breed, so called, the long-bodied fish. This is comet, shubunkin, simple gold fish (without rocks).
It makes no sense to buy expensive breed koi. It will fit the standard red and white colouring.
The only rule for ornamental fish is quarantine. Quarantine is done in order to reveal diseases. It should take place in the aquarium and should last at least two weeks. All types of ornamental pond fish bred in Asia and have many diseases. Continue reading