Pstrążna was formerly part of the German Empire. In the German Empire, the place was called Fischgrund.
The place is now called Pstrążna and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Pstrzonsna | German Empire | Rybnik | before the Versailles Treaty |
| Pstrążna | Poland | Rybnik | after the Versailles Treaty |
| Fischgrund | German Empire | Rybnik | 1939 |
| Pstrążna | Poland | Rybnik | 1945 |
| Pstrążna | Poland | Katowice | 1992 |