Funadvice Logo

Can fish somehow get high off their tank heaters (seriously)?

Home More advice Pets & Animals

I have a freshwater fish tank, and all of them like to hover in this spot at the top of the heater. I don't know if that's where they sleep or if the heater somehow emits something that gets them high. Any ideas as to why the top of the heater is the "hot spot" of my tank? (slight pun intended)