The over 400-year-old mill on the Ilm, located between Kranichfeld and Barchfeld on the Ilm Valley cycle path, is supplied with electricity by means of an overshot water wheel. The passage of the fish is guaranteed via the adjacent fish spiral staircase and the basin pass at the weir. The fish, which are traditionally caught in the Hohenfelden reservoir, the Ilm and other waters using a fish trap, gill net or drag net, are kept in the holding basins in the yard. Fish is sold in the mill itself and in the boathouse at the Hohenfelden reservoir.

Depending on the season and catch, you can buy char, brown trout, rainbow trout, eel, zander, pike, carp, perch, catfish, lead and vendace in the Stedtener Mühle farm store - live or freshly butchered, smoked or marinated.

In the "Life on the river" exhibition, you can find out interesting facts about fish, fishing then and now, the horrors of floods in earlier centuries and human intervention in the river habitat.

The river aquarium is also worth a visit. The Ilm Aquarium is a 16-metre-long facility through which water from the Ilm flows freely. The habitats of trout, grayling, barbel and lead are recreated here.