<a href=showthread.php?s=&postid=8762658#post8762658 target=_blank>Originally posted</a> by pledosophy
Only one of the corals pictured or described has any sting and was stated that the coral was going to be moved. The rest of the corals have no sting and will not harm the horses even if they did grab it. Mushrooms would fall into that no risk catergory IMO.
IME I have ever had an issue with adding fish then horses, or horses then fish. IME it doesn't matter so much the order as long as all is compatible. Adding one or the other first is not going to change anything IME.