I got these two recently, sold as HMs (but they're obviously not 180 degrees, so I'd call them deltas). They both have injured fins. Both have a chunk taken out of their anal fins, and the boy also has what looks like a deep scratch on his tail. Have you guys dealt with similar injuries before? Do you think the fins will grow back to normal length and the scratch fade, or will they likely remain this way? What can I do to encourage healing?