Bremen bordelière (blicca bjoerkna).
Synonym (S) or Name (S) common (S): Bremen, plate
Maximum size: Bremen bordelière measures on average between 20 and 35 cms for a weight seldom higher than 500g.
Origin: Originating in Europe, Bremen bordelière is present in almost the whole of our watery network, and everywhere in Europe.
Zone of life: Bremen lives mainly in calm water or with moderate current. it is held mainly with the bottom where it finds its food but it is current the days of strong heats to see going up on the surface of the ponds, the benches of several tens of undividus.
One can meet Bremen as well in pond as in river and in the channels. She more particularly appreciates the zones low depth and the presence of herbarium as well as green water rich in phytoplankton.
Temperature: Of 5° with 25°C Bremen adapts to the temperature according to the seasons.
Description: Bremen bordelière has a flat body but very top hat of oval. It does not have a bump behind of the head (with the common difference of Bremen). Its head points some ends in a tiny mouth provided with large lips but deprived of barbillon and able to unfold itself forwards seeking food (stops protractile).
Bremen bordelière has between 44 and 48 scales on its side line, which differentiates it from Bremen commune which counts of them 50 to 60. It has a long anal fin and the caudal one is very indented with a lower lobe longer than the higher lobe. The fins pectoral and anal are red at Bremen bordelière.
The eyes of Bremen bordelière are slightly larger than those of Bremen commune and its body is also covered with a abondan mucus.
Bremen bordelière preserves her color silver plated into growing old.
Nutrition: Bremen nourishes primarily the EC what it finds by excavating the mud namely: worms of vases, snails, small invertebrate, molluscs, larvae of insects and remains vegetable. It is also nourished when the bottom is poor, of the daphnids swimming between 2 water.
Anatomy: flat body but very high. rather long fins and a small protractile mouth deprived of barbillon. fins pectoral and anal red.
Behavior: Gregarious Poisson who lives on the bottom in bench of sometimes more than one hundred of individuals. This fish is very peaceful towards these congeneric like towards other fish.
Dimorphism: No dimorphism apart from the period of laying. During the abrasion on the other hand, the males are covered with small white buttons (buttons of weddings) and they become territorial.
Reproduction: The reproduction of Bremen bordelière proceeds between May and June when the temperature of water is close to the 16°C. The males and the females rub then which starts the laying of the female (100000 to 200000 eggs per kilo of weight what makes it much more prolific than Bremen commune). the eggs are deposited randomly on a small territory in the middle of the vegetation and sometimes even on the bottom and the male protects thus this territory during approximately 1 week until blossoming. the larvae nourish then zooplancton after résobtion of their vitelline bag.
One needs 2 to 3 years in Bremen to reach its sexual maturity.
The Council for the fisherman: in the event of starting, Bremen is often one of the first species has to come on the blow from fishing.
Various: Hybrid Bremen bordelière usually with Bremen commune but also with the gardon, the rotengle and the bleak.
Information: the cards of fish can be to supplement by an experiment of the subject, or a comment concerning a lack of information on this card.