I just started a 30 gallon tank & have two damselfish in it now. I want to add two clownfish in the near future but am confused as to if they will co-exist. One fish store told me to take the Damsels out as they will kill the Clownfish at some time. They suggested I replace the Damsels with some Gobies instead. So far three stores and three different opinions. Thx Toodler