No other physical changes. Tankmates are a CB target mandarin, assorted snails, and 5 peppermint shrimp. I have several species of macro, a few types of sponges and photosynthetic gorgonians, and corals that are rated 0-1 on the org list (mushrooms, zoas, Kenya tree, duncans, acans, lobo, and a pagoda cup. The tank is a 57g, which is 4 months old, and I've had the horses for about 4 weeks. No recent changes to the tank or feeding schedule. She's usually fairly active/interactive, just not today. She didn't eat this morning, but I had just given her a quick exam to check for stings, bumps, etc. I've honestly never witnessed a seahorse BM, so am not sure what to watch out for.