Ery Sp.peru and ery ery can be hard to tell apart but theres a few main differences
A great way to tell them apart is that Sp. peru does not have an orange stripe at the top of its dorsal fin while Ery ery does
A few other differences is Sp. peru will have there redish orange color at only the base of there caudal fin. There color is a difference as we'll Sp. peru has a much brighter orange to them and will often have red mixed in with there orange while i haven't seen any redish colors to Ery ery also Sp. peru will only get there redish orange color below there lateral line
A great way to tell them apart is that Sp. peru does not have an orange stripe at the top of its dorsal fin while Ery ery does
A few other differences is Sp. peru will have there redish orange color at only the base of there caudal fin. There color is a difference as we'll Sp. peru has a much brighter orange to them and will often have red mixed in with there orange while i haven't seen any redish colors to Ery ery also Sp. peru will only get there redish orange color below there lateral line