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
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
There are many different species of aquarium fish and when selecting an important principle is their compatibility. To pay attention to this important point should be before purchasing the fish and putting them all in one aquarium. The main criterion in the decision of this question is the similarity of habitat of various fish species. In an aquarium you can put fish that are close in their vital needs, habitat, habits and temperament. For example, consider that harasimovich fish you can’t repopulate with silovymi, as the latter significantly more aggressive than the first. In addition, most of the Cichlidae fish lives in an alkaline environment, not acidic.
Known fact that to accommodate the aquarium and freshwater and marine fish is unacceptable. Novice aquarists often make many mistakes due to misinterpretation of the level of water hardness and acid-base balance a variety of freshwater biotopes. Continue reading