Disables the random notifications that Sims you don't actively play discovered a new fish species. The second mod included in the package (<strong>noautonomousresearchplant</strong>) gets rid of the respective problem with gardening socials.
As soon as you load the game or exit CAS, etc all Sims in your game will have preferences intelligently applied (if they don't already have a like and/or dislike in that category). It shouldn't overwrite any existing preferences that are set.