After the fish had fermented for 5 months (see video here: https://youtu.be/6MDHqY8prE0) I stirred the mixture, and a couple of days after that I decided to scoop out a small amount of the liquid and see if I could filter it to get some garum. The result is here....
For some reason I lost the audio track - the music here is 'Filter Tip' by La Femme.