The Fischerei is a very traditional German restaurant, run by a family breeding fish in the ponds in the area. The restaurant is "nicer" but not fancy. While a reserved table inside does fulfill the usual requirements for a nice dinner in nice clothes, you are also welcome coming in your biking gear for lunch.
A good number of tables are available outside, which is a comfortable terrace. Reservations are recommended as the Fischerei is known and usually pretty well visited.
The food selection ranges from traditional German/Franconian food to the great local fish selection. Everything is fresh, plentiful and high quality. For foreigners it should be noted that the local fish specialties are a little "odd". The are is famous for breeding carp, which is usually not the most revered fish. But in this area it is a specialty and it does taste different than the possibly expected muddy bycatch. The most common ways of serving this carp is "baked" (deepfried in batter) and "blue" (cooked in a vegetable broth). Both variants come as a whole fish, including fins and head, which is common in Germany, but the Fischerei also offers filet versions of carp. For the not-so-adventurous people also the trout can be highly recommended.
The prices are medium to low, depending on the food (steaks are more expensive than fish).