European river zonation

Fish regions are fishing legally in Germany the ecological zones of rivers ( mountain to the sea mouth, flushed lakes and canals), after Leitfischarten ( characteristic fish species) are classified. Standing water can be divided into different ecological life zones: open water zone ( pelagic zone ) and soil zone ( benthic ).

Trout region

The trout region is usually on the upper reaches of a river. It has a very strong current, thus the water is circulated through gravel and larger stones and enriched with oxygen. The water temperature rarely rises above 10 ° C. The reason consists of rocks, boulders and coarse gravel.

Leitfisch is: brook trout

Associated with: bullhead, minnow and brook lamprey

Limnological classification: Epirhithral (upper trout region ) and Metarhithral (lower trout region )

Grayling region

In the grayling zone still exists a strong flow and high oxygen content, but there are more plants than in the trout region. The water temperature rises here already to 15 ° C, the substrate consists of gravel and coarse to fine-grained gravel.

Leitfisch is: Grayling

Associated with: nose, gudgeon, Schneider, chub, burbot, sea trout, salmon and Danube salmon ( Danube area )

Limnological classification: Hyporhithral

Trout and grayling regions are also referred to collectively as Salmonidenregion ( limnological Rhithral ).

Barbel region

In the bar area, the water temperature is about 15 ° C, the base consists of coarse sand and fine-grained gravel. The river ( mirror widths ) are wider and the flow is only weakly. The oxygen content varies, and is lower than in the mullet region. The riparian zone is rich vegetation ( reed beds ).

Leitfisch is: Barbe

Associated with: Aland, asp, salmon and nerds ( Danube area ), hazel, Pickerel, roach, rudd and bream

Perch, pike, perch and eel are already to be found.

Limnological classification: Epipotamal

Brachsenregion ( Lead Region)

The Brachsenregion is the richest fishing area and is located on the lower reaches of a river. The temperatures in summer to 20 ° C, in winter, the river freezes here often. The vegetation is lush and the subsoil consists of fine sand, partly to sludge deposits from. The oxygen content is very low.

Leitfisch is: bream (also called Lead )

Associated with: bream, pike-perch, perch, rudd, roach, tench, eel and pike

Wild carp, crucian carp, bleak and catfish are found.

Limnological classification: Metapotamal

Bream and barbel region are grouped together and referred to as Cyprinidenregion ( limnological potamal ).

Ruffe flounder region

This region is already one of the brackish water area and is the last fish region. It is located in the delta to the sea in the area of ​​influence of the tides. It is in summer 20 ° C warm and warmer. The substrate consists of fine sand, gravel and mud. The oxygen content varies depending on the tides.

Leitfisch is ruffe

Associated with: flounder, mullet, sturgeon and eel

In addition, the three-spined stickleback and all the fish of the Brachsenregion occur.

Limnological classification: Hypopotamal

Classification of Fish regions on the gradient and width

After DVWK (1996) and Huet (1949)

• Limnology
• Fishing rights ( Germany )