Mimian Bladder Fish were a stingray-like GELF fish cultivated and eaten on Mimas and it's restaurants, therefore presumably eaten with Mimosian Anti-Matter Chopsticks and drank with Mimosian Telekinetic Wine.
Arnold Rimmer pretended to be an officer and said he was off to try such Mimian/Mimosian cuisine to Dave Lister when he asked Lister (posing as a taxi driver in a stolen hopper) to take him to the red light district of Mimas. Rimmer claimed he wanted to try the Mimian bladder fish; an obvious lie since he had Lister take him to a droid brothel. (Infinity Welcomes Careful Drivers)
Mimian bladder fish may or may not have been part of Legion's Mamosian cuisine. Given they come from the same place it is likely, although impossible to tell if it is among Legion's condiments due to the way they are arranged. (RD: Legion)