I bought a colt coral long ago at Aquatic Marine. it was a cheap $5 frag. It grew to be about 7-8" tall, but then got some damage as I tried to move it. That knocked it back a couple inches, and it was recovering well. The other day, my red coris wrasse tipped over the rock that it was on, knocking it onto my frogspawn. I don't know how long it was on there, could have been as much as 12hrs. The frogspawn killed it. It now is nothing more than about an inch of dead flash hanging off a rock.