Flukes I can't seem to get rid of

[melypr1985]

But they aren't sexually mature for 9-14 days so they can't reproduce.

If these are prazi resistant then they must have reproduced if they are still there. The idea is that the adults have laid eggs by the time you treat the first time with prazi.... by 5-7 days those eggs will have hatched and that's when the second dose comes around - before those babies can lay eggs of their own. If yours are prazi resistant then it doesn't matter. Do the freshwater dip just to be positive, then do the formalin dip to get rid of them once and for all. Of course you wouldn't be able to put him back in the tank that the flukes are in until it sits fallow....i'm sure I'll remember the number of days. Its rare to have a fallow period for flukes.

 

[Humblefish]

If I use the website you have in a thread awhile back (marineparasites) it says at my temp and salinity that there is only a 35% chance eggs hatch and only 5-9% chance of infection again, yet here I am

The person you really want to talk to about this is "Newsmyrna80" over on RC. She was the first one to encounter prazi resistant flukes and together we formulated a plan of attack. She performed weekly formalin baths for a solid month to finally rid her fish of flukes. And that whole experience really lite a fire inside of her when it comes to flukes. She has done a ton of research on them, and is by far the most knowledgeable person I know on the subject.

 

[tj w]

Humble, can u see if she'll come here to R2R and share her knowledge please? I think that would be great

 

[Humblefish]

Humble, can u see if she'll come here to R2R and share her knowledge please? I think that would be great

I've invited her several times, but I think she's too busy for the forums anymore. She's rarely on RC. You have to PM her.

 

[tj w]

Ok, just thought I would ask. Thanks

 

[seafansar]

I would do a freshwater dip if you can (even if you're going to take the fish to the LFS. At least then you can actually see if it's flukes or not) and if not, try using double the dosage of praziquantel powder for each treatment. That's what I had to do with flukes that seemed to live through the normal dosage. I would dose that every 7 days for a total of 3 times.

 

[najer]

Lots of interesting chemical comments but did you actually try a tap water dip yet, as mentioned earlier, it worked for me and my lfs do it all the time?

 

[Viner87]

Did you ever get to the bottom of this? I have the exact same problem!! [emoji24]

 

[TheRealDmorty217]

Did you ever get to the bottom of this? I have the exact same problem!! [emoji24]

Formalin or clout is the only way to kill the praziquantel resistant flukes. When you have flukes that are PP resistant they are nearly impossible to kill. There is documentation that states a controlled test was done on rays that showed that up to 10xs the recommended dose of PP was not successful at killing the flukes.

 

[Humblefish]

Formalin or clout is the only way to kill the praziquantel resistant flukes. When you have flukes that are PP resistant they are nearly impossible to kill. There is documentation that states a controlled test was done on rays that showed that up to 10xs the recommended dose of PP was not successful at killing the flukes.

It's probably the Trichlorfon/Dylox found in Clout. I know one public aquarium that uses De-Los (Dylox 80) to treat prazi resistant flukes and it generally works. However, Trichlorfon failed to eradicate at least one species of monogeneans in this study: https://eafp.org/download/2012-volume32/issue_3/103-Toksen.pdf

I am currently experimenting with fenbendazole to treat prazi resistant flukes, after seeing Noga recommend it in his book in a 12 hour bath treatment @ 25mg/L.

 

[Viner87]

Thanks guys. My problem is the fish in the DT have it, so I ideally need a reef safe option - I’ll take a look into what you’ve suggested [emoji1303]

 

[TheRealDmorty217]

It's probably the Trichlorfon/Dylox found in Clout. I know one public aquarium that uses De-Los (Dylox 80) to treat prazi resistant flukes and it generally works. However, Trichlorfon failed to eradicate at least one species of monogeneans in this study: https://eafp.org/download/2012-volume32/issue_3/103-Toksen.pdf

I am currently experimenting with fenbendazole to treat prazi resistant flukes, after seeing Noga recommend it in his book in a 12 hour bath treatment @ 25mg/L.

That’s scary that there are Trichlorfon resistant flukes out there. Please update us on how the fenbendazole works. Noga’s book has so much great information but reads like a research paper!