fixed an issue causing the pillar part of the fishtank to be transparent from one side 

fixed an issue causing the fish from nether depths upgrade to only float around instead of swimming

added several new config options to the config pages of the Guidebook 

added a config option that blocks puffer fish from "Puffing" while in a fishtank 

added a config option that stops fish 6 axolotls from attacking each other while in a fishtank 

fixed an issue causing the floor of the fishtank to sometimes be invisible 

fixed an issue causing the game to crash due to a water check being performed in the nether