Fish Issue

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Ranger11

New Member
Hi, I just recently had several fish die in my 155 gallon tank. I had a dog face puffer, Fox face , Coral Beauty and emperor angel. I had the foxface and puffer for two years with no problem than I got a emperor while he was a juvenile and coral beauty and for 8 months there was no problems. Foxface was the first to die than coral beauty than emperor and just today puffer died. I did notice scratches down dogface puffers body. Last night he was starting to turn black in color and today he was completely black and dead. I was told that when emperor gets bigger and older that he would get more aggressive. I tested my water and and all of my test were fine . Water changes are done bi weekly and like I said earlier before I got emperor and coral beauty I didn't have no problems. Im so pissed right now and just want to know why did this happen ?
 
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Ranger11

New Member
I honestly didn't notice nothing like that because when light would come on most of them be hiding behind or in rocks.
 
geridoc

geridoc

Well-Known Member
Pufferfish produce a potent toxin, tetradotoxin. The concentration in a single adult fish is sufficient to kill 30 human beings. I suspect that something was stressing your puffer (hence the blackening skin) and it responded by releasing tetrodotoxin into the water.
 
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