No More Ambient Mobs

This simple mod completely disables the spawning of bats and various fish species (cod, salmon, pufferfish, tropical fish) in your Minecraft world.

The modification works at the system level, blocking the generation of all creatures categorized as "Ambient" and "Water ambient". These mobs are classified as background creatures since their primary purpose is to create atmosphere in the game.

The practical utility of these creatures is minimal or completely absent. It's important to note that the mod also prevents the appearance of similar mobs from other modifications if they have the corresponding label.

The development of this solution was motivated by the discovery that background mobs consume up to 5% of the server's computing power. Considering such resource usage unjustified, I decided to completely remove them from the game.

Interestingly, I played Minecraft even before these creatures were added, so their absence doesn't cause discomfort. If desired, one could implement a client-side version of background mobs that would allow seeing swimming fish and even interacting with them, but without server load.

This mod is especially useful for server owners striving for maximum performance optimization. In single-player mode, the difference may be almost unnoticeable.

Important note: the mod does not remove mobs already existing in the world.