I have been having problems with long hair algea in my seahorse tank. I was told that I could get a Lawnmower Blenny to help with the algea and it would co-exist with my Seahorses. It did fine for about a week, then the Blenny started going after my Seahorses. I was able to catch and remove the Blenny but my Seahorses stayed near the top of the water for about 24 hours, with fast breathing and not eating. I was hoping it was just because they didn't realize I took the Blenny out. It's now been 1.5 days and my smaller Seahorse has slowly started moving around, looking for food but still breathing fast and not really eating anything. My larger Seahorse has not moved from the top of the tank (that I have seen), is showing no interest in food, and is breathing fast. They both are developing this white stuff on the sides of them, the larger Seahorse almost looks like he has a swollen circular area on his side. I'm almost certain that it was caused by the stress of the Blenny since they both are acting the same way, showing the same symptoms and it all started at the same time as the Blenny going after them. Any help on what I should do to help then would be greatly appreciated.