I just started a 14 gallon nano reef. I have about 14 pound of live rock, 4 snails, 2 hermit crabs, and finally added two baby clownfish. They have been eating and acting great until a couple of days ago when the larger of the two started swimming along the back wall, it won't leave the area, not even to eat. The other is eating normally. I checked my pH, ammonia, nitrite, and nitrate levels and they were all fine. About tow hours ago I noticed lots of white pods covering the back wall underneath the larger clownfish. Are the fish spawning or is there another explanation?