I have a unknown zebra that is about 2 years old. He is the dominate male in my 75g but ever since my tank got sick about 3 months ago and I lost 20 fish, he's stopped coloring up. I don't know what illness the tank got. Ick treatment did not do anything so I turned up the temp and added a lot of salt to the tank and all the fish got better immediately. The fish that I lost did not look sick. The ones that looked like there were going to die, lived. He still colors up when he gets mad from time to time but then looses it.
He's gone from the first pic below to a completely purple color like the last pic. What could be the problem?
Colored Up: Fish turning
After tank got sick: Fish on the bottom
He's gone from the first pic below to a completely purple color like the last pic. What could be the problem?
Colored Up: Fish turning
After tank got sick: Fish on the bottom