Typhoid Mary?

radiata

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If a fish survives a nasty outbreak of Velvet/Oodinium without the help of any medications or copper, would or could that fish become an asymptomatic carrier of the disease and infect any fish subsequently placed with it after it had been isolated for six or eight weeks?
 
Short answer? Yes it can.
Longer answer? If the fish isn't treated it will still carry velvet and allow the parasite to continue it's life cycle. Even if the fish is isolated in a QT and the display left fallow, returning said fish to the newly fallowed tank will just reintroduce the parasite back to the tank. If he's already isolated in a QT, then why not just add copper to it?
 
^^ Agree; fish that survive parasite outbreaks often build up immunity. Sometimes temporary, sometimes even permanent.

However, they will most likely always be asymptomatic carriers capable of infecting other fish.
 
It will still be carrier, its similar to ich, if fish is immune and doesnt have any symptom it will still infect others as the parasite will be hidden in the gills (thats where the slime coat is the least, so it is easier to infest) in the case if velvet its worse, because its more deadly than ich and not many fish can develop immunity in the short time velvet take to kill that fish.

Best of luck.
 
It will definitely be a carrier. You'll find it's not uncommon for hardy, established wrasses or gobies with thick slime coats can pull through velvet. Fairy and flasher are less likely to be able to do so than say halichoeres and macro(leopards), and larger wrasse.

You'll be a really frustrated reefer if those fish go untreated!
 
Hmmm... the fish, as predicted by 4FordFamily, is a Grey Head Wrasse (Halichoeres leucurus)...

Now all I need to do is catch it. Too bad it is so paranoid.
 
Hmmm... the fish, as predicted by 4FordFamily, is a Grey Head Wrasse (Halichoeres leucurus)...

Now all I need to do is catch it. Too bad it is so paranoid.
Watch where it buries in the sand for the night, shove a big net where it's likely to exit when you shove your hand in there from the other side. This hasn't ever worked for me but others report good luck. I suppose it depends on where the fish retires.

Another thing you can get is a fish trap/acclimator. I purchased mine from amazon and although halichoeres are often very weary - feed the fish from inside it for a few days. The trap door will have a hole for fishing line to tie. Stand several feet away and let go of the line to close the trap door. Voila.

A hungry fish is more likely to risk going in to some place foreign to obtain food.
 
Here's an odd and overdue follow-up for 4FordFamily...

Watch where it buries in the sand for the night, shove a big net where it's likely to exit when you shove your hand in there from the other side. This hasn't ever worked for me but others report good luck. I suppose it depends on where the fish retires....

<SNIP><SNIP><SNIP>

I've never before seen my Grey Head Wrasse (Halichoeres leucurus) bury itself in the sand. Until about a half hour ago that is, when I was sitting in front of my DT with my feet up enjoying the last glass of a bottle of Jadot French Chardonnay. Up 'til now I'd have bet you dimes to buttons that this wrasse species never buried itself. Hmmm, live and learn...

Anyway, I thought I'd fess up and say that I never treated this fish after all my other fish died off. I just left it alone in the 180 DT for a good two months (can't remember the exact number of weeks). The system now has about 20 apparently healthy (and overfed) fish in it. Perhaps this means that Velvet doesn't survive in the gills of a Halichoeres for any length of time. But, who knows...

That said, thank you 4FordFamily for your previous input trying to help me with my typhoid problem.
 

IF YOU HAD TO TAKE A REEFING EXAM, WOULD YOU PASS?

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