How long does it take Brook to kill clowns?

[pfan151]

Been lucky enough to never have to deal with this but I'm curious how long it generally takes? I see it posted often that it kills clowns quickly but haven't seen an actual estimate of time that it usually takes to kill them.

 

[mr9iron]

I've observed Brook kill fish in about 4 days. It's a horrible thing to watch, and is why strict QT procedures on fish is a must now. Years ago it seems as if we did not see the disease and parasites that we do now. I can remember just dumping fish in the display with no worry. That has changed though!

 

[ctlegacy]

I actually came here thinking this was going to be a funny story about a girl named Brook... Bummer.

 

[snorvich]

I've observed Brook kill fish in about 4 days. It's a horrible thing to watch, and is why strict QT procedures on fish is a must now. Years ago it seems as if we did not see the disease and parasites that we do now. I can remember just dumping fish in the display with no worry. That has changed though!

I agree. Once visual symptoms display, mortality is pretty quick.

 

[DasCamel]

I wonder if the larger wholesalers are supporting stronger Brook strains.

 

[ThRoewer]

The key is how weakened the fish are. Fish weak from shipping may not last 4 days, while well acclimated fish may survive weeks or even recover on their own.

I think it is safe to assume that fish can develop immunity against brook the same way they develop immunity against ich.

I feel that brook outbreaks on freshly imported clownfish are largely due to poor shipping conditions and/or ammonia burns which opens the door for an opportunistic infection.

I also think that some wild clownfish live with low level infections that they introduce to the holding tanks at the collection tanks of the exporters.

I don't think the main issue is on the wholesale end.
I've seen direct shipments of Solomon percula coming in nice and clean where all fish survived and then the next where 90% died within a couple of days.

I've also seen brook infested new arrivals (from ORA!!!) infecting a whole sales system and killing many established fish while some fish in the same tank never showed the slightest sign of being sick.

 

[D-Nak]

I've also seen brook infested new arrivals (from ORA!!!) infecting a whole sales system and killing many established fish while some fish in the same tank never showed the slightest sign of being sick.

It used to be that one of the reasons why people said captive-bred fish were better was because they didn't have diseases that that wild-caught fish do.

Not so much anymore. :sad2: