'fish brook') is a Stadtteil, one of six administrative subdivisions, of the town of Kelkheim in the Main-Taunus district of Germany.

The town of Eppstein is to the west and Königstein im Taunus is northeast of Fischbach.

It flows through Fischbach and the Fischbachtal (Fishbachl valley) to merge with the Schwarzbach stream in Eppstein.

Bundesstraße 455 (federal highway 455) heads from Königstein via Fischbach to Eppstein and Wiesbaden.

The new road does not bypass Fischbach but crosses the town on an artificial embankment, with a bridge over the central street Langstraße.

Bus routes connect Fischbach with Kelkheim railway station and the Frankfurt Transit system.

The old town centre is situated at the intersection of the main roads from Kelkheim to the suburb of Ruppertshain and from Königstein to Eppstein.

In the north, only a small residential estate was built on a former brickyard area (An der Ziegelei).

The first document which proves the existence of Fischbach (gift to Fulda convent), is dated in the year 780.

Starting from 890 Fischbach was part of the shire of Uualahes and during Early and High Middle Ages a member of the Niddagau province.

After Napoleon split the Holy Roman Empire in 1806, Fischbach and the vicinity was part of Duchy of Nassau.

Nassau was annexed by Prussia in 1866 degraded to Wiesbaden district of the Prussian province Hessen-Nassau.

In 1977 Fischbach was incorporated to the city of Kelkheim, together with the former community Rossert (Ruppertshain and Eppenhain).

The left field shows, according to the town name, two red fishes in a silver creek.

Due to strong immigration of citizens from Frankfurt, the confessional (mainly Catholic in former times) and the social structure changed: In addition to the long-established village residents, mostly craftsmen and farmers, an academic affected middle-class appeared (employees of Hoechst AG) In 1781, church Saint Trinity substituted an older church which was built in 1686.

Today, Rettershof consists of three parts: the historically styled yard of the manor, the former mansion and the restaurant.

After its demolition the altar was transferred to Saint Trinity in Fischbach, but the Gimbach pilgrimage continues to this day.

[2] The manor grounds are used for horse breeding, for growing and pressing Apfelwein, the local cider, and as for camping.

The town hall of Fischbach was established shortly before the village was incorporated to Kelkheim.

Today the building is community center, contains outposts of Kelkheim town authorities and is home for several clubs.

The school is named after Albert von Reinach (* November 7, 1842 in Frankfurt am Main; † January 12, 1905).

The Protestant church community celebrates Saint John's day (June 24).

The Hanseklinger festival in late summer is celebrated in the village center around the homonymous fountain.