i just added a cleaner shrimp to my 12g that has been up and going for about 3 months now. he seems to just stay up on the heater , is this normal?
tank inhabits, 2 yellowtail damsel, 3 scarlet crabs, 3 dwarf blue legged crabs , 2 bumble bee snails , 3 sand swifters, some zoos, and mushrooms...