What can kill a fish in 1 day??

[Pickleowl]

I had a pair of clowns that had been through QT of CP and prazi, according to Humblefish QT process so I felt really good they were free of parasites and healthy, they have been in my display tank for about 3 months now completely normal.

2 nights ago I fed them both and they ate like pigs, like normal. Last night around 6pm the bigger clown ate like a pig, smaller clown just hung out in a low flow area not eating at all. Only thing I could visibly notice was she wasn't using her tail fin hardly at all but besides that she looked just fine. I kept watching her through the evening and night and about 9pm I looked over and she had no strength to swim and was just floating with current. I examined her again and she looked totally normal,, no signs of velvet or anything at all except rapid breathing.

So I gave her a freshwater dip for 5 minutes and back in tank, no flukes that I could see. She perked up a bit after that and could swim a little at least but after dip she looked splotchy and kind of translucent I guess. Then quickly downhill and couldn't swim anymore, I was at a loss. I have a royal gramma in QT in CP now so I through her in that tank not knowing what had happened and what to do. She was gone when I woke up. All I saw when I removed her from the QT was her tail fin was a little shredded and she had some redness just above her mouth.

So my question is what could this possibly have been? To kill so fast in what I believe to be a parasite free tank. (Tank was fallow for 6 months and these fish went through CP and parazi) Can there be organ failure or some other thing we just can't see that could do this so fast?

Any thoughts?

 

[Bob Loblaw]

...

 

[Frtdrmrose7]

The fastest killer would be ammonia, have you tested for it? Any chemicals possibly make it into the tank? Are you dosing anything?

I had a pair of clowns that had been through QT of CP and prazi, according to Humblefish QT process so I felt really good they were free of parasites and healthy, they have been in my display tank for about 3 months now completely normal.

2 nights ago I fed them both and they ate like pigs, like normal. Last night around 6pm the bigger clown ate like a pig, smaller clown just hung out in a low flow area not eating at all. Only thing I could visibly notice was she wasn't using her tail fin hardly at all but besides that she looked just fine. I kept watching her through the evening and night and about 9pm I looked over and she had no strength to swim and was just floating with current. I examined her again and she looked totally normal,, no signs of velvet or anything at all except rapid breathing.

So I gave her a freshwater dip for 5 minutes and back in tank, no flukes that I could see. She perked up a bit after that and could swim a little at least but after dip she looked splotchy and kind of translucent I guess. Then quickly downhill and couldn't swim anymore, I was at a loss. I have a royal gramma in QT in CP now so I through her in that tank not knowing what had happened and what to do. She was gone when I woke up. All I saw when I removed her from the QT was her tail fin was a little shredded and she had some redness just above her mouth.

So my question is what could this possibly have been? To kill so fast in what I believe to be a parasite free tank. (Tank was fallow for 6 months and these fish went through CP and parazi) Can there be organ failure or some other thing we just can't see that could do this so fast?

Any thoughts?

 

[Dr. Dendrostein]

I had a pair of clowns that had been through QT of CP and prazi, according to Humblefish QT process so I felt really good they were free of parasites and healthy, they have been in my display tank for about 3 months now completely normal.

2 nights ago I fed them both and they ate like pigs, like normal. Last night around 6pm the bigger clown ate like a pig, smaller clown just hung out in a low flow area not eating at all. Only thing I could visibly notice was she wasn't using her tail fin hardly at all but besides that she looked just fine. I kept watching her through the evening and night and about 9pm I looked over and she had no strength to swim and was just floating with current. I examined her again and she looked totally normal,, no signs of velvet or anything at all except rapid breathing.

So I gave her a freshwater dip for 5 minutes and back in tank, no flukes that I could see. She perked up a bit after that and could swim a little at least but after dip she looked splotchy and kind of translucent I guess. Then quickly downhill and couldn't swim anymore, I was at a loss. I have a royal gramma in QT in CP now so I through her in that tank not knowing what had happened and what to do. She was gone when I woke up. All I saw when I removed her from the QT was her tail fin was a little shredded and she had some redness just above her mouth.

So my question is what could this possibly have been? To kill so fast in what I believe to be a parasite free tank. (Tank was fallow for 6 months and these fish went through CP and parazi) Can there be organ failure or some other thing we just can't see that could do this so fast?

Any thoughts?

Possible stray voltage, maybe

 

[Pickleowl]

The fastest killer would be ammonia, have you tested for it? Any chemicals possibly make it into the tank? Are you dosing anything?

I didn't test yesterday but I did when I got home today and everything was good,, ammonia was 0.. not dosing anything, it's a little 30 gallon FOWLR.. no chemicals to my knowledge, the other clown at this point in time is just fine but I'm keeping my eye on him..

 

[Pickleowl]

Possible stray voltage, maybe

Didn't consider that, I could get a meter and find that out..

 

[Pickleowl]

Where'd you get the CP?

I got it from the place Humblefish recommended,, Diamondback.. I have a vet friend, after I told where to get it she wrote a script for it..

 

[ngoodermuth]

Did the fins look frayed before he passed or just when you removed the body? You said it looked splotchy, like stress markings? Or like white or red patches?

It may have been a bacterial infection, but after 3 months with no physical trauma it would be unlikely... the gram negative infections that kill quickly are more associated with new fish.

Any other “wet” additions in the last few weeks? Corals, inverts, live rock, etc?

 

[Gareth elliott]

If no other fish is effected always the possibility of non disease cause like a stroke that would cause the inability to use its tail or the fish rammed the glass and injured its spine(more common with fish that swim better than wobby clowns though)

 

[Big G]

Bacterial infections that have not shown exterior symptoms have been popping up the past year. Post mortem examination s have show evidence of "internal bacterial infections."

 

[Pickleowl]

Did the fins look frayed before he passed or just when you removed the body? You said it looked splotchy, like stress markings? Or like white or red patches?

It may have been a bacterial infection, but after 3 months with no physical trauma it would be unlikely... the gram negative infections that kill quickly are more associated with new fish.

Any other “wet” additions in the last few weeks? Corals, inverts, live rock, etc?

Fins were frayed a little after I removed her, not before and splotchy look was not colored at all, just her markings just weaker if that makes sense but only after dip.. no additions at all, nothing else went into tank and other clown is doing just fine, no issues with him, just lonely now..

 

[Pickleowl]

Bacterial infections that have not shown exterior symptoms have been popping up the past year. Post mortem examination s have show evidence of "internal bacterial infections."

Think that could kill a fish that fast and would that be something it could keep inside and not show any indications for a couple months? And should we be dosing something in QT for that as well as a precaution?

 

[JacquieBeginnerReef]

Sorry your clown died. I had a clown die suddenly on Wed night, but my other clown was also struggling, and gramma was not acting normal. Still not 100% certain, but seems like it was most likely the epoxy I used to stick down the coral that day.
Happily, my surviving fish seem much better now thankfully. Anyway, as you just had one clown that seemed sick, it’s unlikely the same reason. I just wanted to share as sometimes odd things can cause a sudden death. You can check my build thread for more details.
Sorry again for the loss. It’s not a nice feeling.

 

[Big G]

Think that could kill a fish that fast and would that be something it could keep inside and not show

Some members have taken to dosing a wide spectrum antibiotic with new fish in the QT. Good choice would be Spectrogram or its equivalent of Kanaplex + Furan2. The Spectrogram is a bit easier to use.