The lake is long and has a flat head. It has two dorsal fins. Although there is a cod fish so it lives in freshwater, brackish and salt water. Interlaken thrives best in cool and oxygen-rich water. Often it lives near the bottom in deep water.
Are widespread in the northern hemisphere. Missing for some reason in Bohuslän, found otherwise all around Sweden.
The lake usually amounts to 35-70 cm, but can occasionally be over 80 cm. Life: Minimum 11 years.
Swedish angling record is about 8.50 kg.
The lake is a cold water fish any time to keep the soft clay base in deep water.