Extract text from Shell scripts (FISH)
To convert FISH scripts to another format, you need Fish Shell or other Developer software.
To convert other file formats to the "Shell Script" file type, you need software like Fish Shell or a similar tool.
The .FISH extension primarily identifies a command-line script written for the Fish (Friendly Interactive Shell). Unlike standard SH (Bash) scripts, Fish scripts use a cleaner, more human-readable syntax that is not backward compatible with Bash or Zsh. This means you cannot simply run a .fish file on a standard Linux server or CI/CD pipeline without the Fish interpreter installed. Users often need to convert these scripts to BASH or SH to ensure portability across systems that don't support Fish.
Alternatively, in the gaming world, .FISH files appear as proprietary data containers. In the RPG Sudeki (by Climax Studios), they function as game data archives. In titles by Vblank Entertainment (like Retro City Rampage), they are often compressed music or audio files. These binary files are "locked" and cannot be opened in standard media players. To use them, you don't "convert" them in the traditional sense; you must extract the internal assets (often WAV or PNG) using specific modding tools or hex editors.
Convert.Guru analyzes your FISH file, detects the exact format, and lets you read the text inside.
Users also converted HSP, KS, GSE and BASH files.
If you want to convert FISH file to BASH, you can use Fish Shell or similar software from the "Fish Shell Script" category. In the File menu, look for Save As… or Export….
To convert files to FISH, try Fish Shell or another comparable tool in the "Fish Shell Script" category.
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our FISH converter.