Over our brook is still very little written. So for example that it was in former times very fish-rich, but after that 2. World war by the intensive agriculture, mining industry waste water and chemical Industrys was biologically dead. Only in the village St. Niclas were present in side brooks still small Fishpools. From these ponds if "Forellen" arrived with flood into the brook, then they did not survive thanks of the liquid manure from the pig mast the next days.
After the pig mast plant was closed, from some few "Forellen" very stable existence formed. Even carps, "Flussbarsche" and "Gruendeln" were sighted in the brook. Who by the Muelsengrund comes is nevertheless times an attentive view into the clear brook water to throw. Determined he discovers between the stones some "Forellen" and to the spawntime in the spring can one at the weirs even a jumping of the Forellen observe. This regained fish wealth tightens also the heron and who has very large luck, which can observe at over-hanging branches even a turquoise jewel. The Kingfisher is interested evenly also in young fish.
Very importantly our brook was in former times as driving power for the many mills. Of it St. Niclas on its length on the left of or right by a millwheelbrook was accompanied nearly constant up to the delta in Schlunzig. The mills belonged beside the agricultural holdings to the oldest breadpurchase into our valley. Unfortunately today only the numerous weirs and name tell such as "Claus"-mill, "Hammer"-mill or "Wilde"-mill of this trade.