Something injured my red fromia star. i've had him for about a year and a half and I DON'T want to lose this cool little dude. Looks like something took a big chunky bite out of one of his legs. I added some prime to the tank as a precaution. He hasn't moved since I noticed the injury, except to wave his arms (no traveling though). Anything else I can do? I'm suspecting the hippo tang, as she likes to pick up frags, take them to the top of the tank and watch them float down. I'm guessing she tried to do the same with the starfish. The bite size matches her jaw size.
(pic is from when I got him)
125 malawi cichlid, 110 Discus, 75 reef, 30 reef, 27 reef, 4 planted