Background: This fish had been living in my 75g FOWL with a 3.5" Yellow Tang. I'm starting to think this tank is cursed. TLDR version of the history: no fish has survived more than 3 years and 4 months. In nearly ever case the do fine for about 3 years, then rapidly deteriorate. I've ordered a kit from BRS for a thorough analysis of the tank water but the interim: about a week ago I decided to move the Trigger and Yellow Tang into separate quarantine tanks. The tang was looking very faded and the dorsal fin was starting to recede.
Although Trigger was acting normal, it did look a little pinched to me. At first all was good in the QT, but Trigger started refusing food after a few days and getting lethargic. Despite adding Stability to the tank and doing 25% water change ever other day with General Cure, there was an ammonia spike. Given how quickly the fish deteriorated I though moving it back into the display tank was best. I did but for 48 hours there was no improvement. Thinking it was on it's way out either way I put the Trigger back into QT figuring maybe the medication could help. In the interim I dosed with Prime to neutralize the ammonia and did another WC.
This morning, he was dead. In retrospect, moving back and forth was a bad call, but by that point I didn't expect a recovery.
I know this is long shot and sorry for gross pictures, but can anyone discern any clues from appearance?
Although Trigger was acting normal, it did look a little pinched to me. At first all was good in the QT, but Trigger started refusing food after a few days and getting lethargic. Despite adding Stability to the tank and doing 25% water change ever other day with General Cure, there was an ammonia spike. Given how quickly the fish deteriorated I though moving it back into the display tank was best. I did but for 48 hours there was no improvement. Thinking it was on it's way out either way I put the Trigger back into QT figuring maybe the medication could help. In the interim I dosed with Prime to neutralize the ammonia and did another WC.
This morning, he was dead. In retrospect, moving back and forth was a bad call, but by that point I didn't expect a recovery.
I know this is long shot and sorry for gross pictures, but can anyone discern any clues from appearance?
![w927IL0.jpg](/proxy.php?image=https%3A%2F%2Fi.imgur.com%2Fw927IL0.jpg&hash=3091b37982aa39ee77b0a7a713b529f6)
![PGoMXQ1.jpg](/proxy.php?image=https%3A%2F%2Fi.imgur.com%2FPGoMXQ1.jpg&hash=132dd8712affcb1e574efa5c6a800735)