Pearl gourami pair of pearl gouramis, although anything above that volume is greatly recommended, since these fish show signs of stress, abnormal aggression, and illness when feeling confined. Preferred tank temperatures are 22–28°C (72–82F). Tanks with surfaces exposed to fresh air are recommended so that the pearl gourami's labyrinth organ can function correctly. As with any tropical aquarium, adequate filtration, lighting, substrate and decorations, plants, and proper care are required. The pearl gourami is a territorial fish and should only be suited in a community tank with fish of similar size to it. However, this fish may be somewhat timid or shy,
Creature template Edition game's Dungeon Master's Guide, which features tables to aid in the "random generation of creatures from the lower planes". Subsequent other First Edition handbooks, notably the Monster Manual II, as well as Dragon Magazine, featured additional early monster generation templates. Creature template In the "Dungeons & Dragons" game, a template can be applied to a creature to enhance its abilities or to even create a new type of creature. Templates can be either acquired or inherited. An acquired template can be applied to a creature at any point (assuming it meets the prerequisites for the template), while an inherited