Is this more callamanus or something else?

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UNC-CH created the topic: Is this more callamanus or something else?

After thinking I was finished with this callamanus outbreak and still having all 5 fish in separate tanks, I just saw this nematode hanging from a betta that never showed any callamanus before.

Is this callamanus or something else? It's pale and not like the red nematodes that infected my other fish. I assume the Prohibit (levamizole) will treat this? Can anyone identify the nematode? Thanks.

Also - I did treat this fish twice with levamizole just like the others. Do you think a stronger solution might be called for ... say 5ppm?
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Lammergeier replied the topic: Is this more callamanus or something else?

I can't see a picture UNC-CH, for what it's worth. I'd assume that levamizole will treat it, but I'm not confident enough to tell you what ppm you should use, sorry :(
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UNC-CH replied the topic: Is this more callamanus or something else?

Oh - I forgot to paste the link for the pic. :pinch:



Sorry - the picture quality isn't so good. If you can zoom in then you can see the worm well.
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Lammergeier replied the topic: Is this more callamanus or something else?

I'm not sure whether that is callamanus or not (it doesn't look the same as your last outbreak so I'd guess not?) but it does look like a nematode to me based on pictures I've seen of other fish with them. I wouldn't up the dose of the levamizole to anything above what was recommended in that link for using it that Big-Ken linked to you last time:http://www.loaches.com/Members/shari2/levamisole-hydrochloride-1

"The 2 mg/L dosage rate (of the active ingredient Levamisole) is currently (2007) the level being used by the scientific community. It effectively paralyzes Levamisole susceptible parasites at that concentration. Increasing the dosage level does not seem to have any greater effect. (Another good reason to avoid overdosing.) Paralysis of the worms takes place when that level of Levamisole is present in the host--your fish. Dr. Yanong recommends, whenever possible, trying to diagnose what parasite your fish are harboring prior to treatment. Work with an 'exotic pet' veterinarian, or a fish health specialist to insure you are treating with the right medication. "

From reading your previous thread you used 2 - 3 ppm, so I'd go with that again.

I'd suggest doing a repeat treatment, but hopefully a member with more experience in this will chip in because I haven't personally experienced this is any of my fish so I'm just having to go by what I've read :S

How long have you had this betta for? It's quite possible he had this parasite when you purchased him. Fish can go a long time without symptoms. That said, have you ever fed live food to any of your fish (including invertebrates - tubifex worms and the like). Just trying to figure out how your fish may have gotten this, that's all.
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UNC-CH replied the topic: Is this more callamanus or something else?

Thanks for the quick response Lamm. I think you're right about the dose ... there's no reason to up it beyond the 2-3ppm that I used last time. I went ahead and treated that betta's tank and 3 other tanks, as it's about time for the 1 month follow-up treatment anyway. I can never be sure, but the levamizole is pretty broad-acting and will most likely be effective against this type of nematode I think.

I also agree that it wasn't/isn't callamanus. My knee-jerk reaction was to think 'callamanus' :sick: but I've never heard of those being pale or nearly white like this was. He also passed it within a few minutes which is not the case with callamanus. I had two fish survive with visible callamanus and it usually took them a day if not longer to pass them once treatment had begun.

I've had him about 2-3 months? It's hard to keep track :) He could've had it when I got him, but that seems like a long time before showing symptoms. Then again, I've never fed this one anything other than pellets ... not even dried bloodworms. So I'd like to know how he got it also. It could be that he had these worms when I got him, but they don't cause him any noticable harm. He looked fine yesterday and today.

Since I treated the tanks, I may never know if he would have gotten ill from this or not if I don't see another nematode and he remains healthy. Of course, if I never see a nematode again I'll be very happy. :lol:
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Lammergeier replied the topic: Is this more callamanus or something else?

Yeah, from reading that article Big-Ken posted a while ago it definitely seems like levamizole is the go-to for nematode treatment. You'd also be surprised how long fish can go without exhibiting symptoms of a parasite. I know a lot of wild fish carry parasites, yet relatively few show visible symptoms of it unless their immune systems are compromised in other ways. Depends on the parasite of course, but if you've only had him a couple of months and have never fed live I'm thinking that he had it when you got him.

The other thing I'm sure you're doing, but worth a mention anyway is to just make sure you do big, regular w/cs to get rid of any parasite eggs in the tank. How's he behaving aside from the worm?
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UNC-CH replied the topic: Is this more callamanus or something else?

That's what I find somewhat puzzling ... and hopeful. Yesterday, he was and still is his normal happy self. Although the lights are off because of the medication, I can see no difference in his behavior. He's fairly calm for a betta but never goes long without displaying energetic swimming or playing. Of the two bettas that showed callamanus, one died and the other has been biting his tail ever since. All the fish acted sick with a decrease in energy at the very least. So I'm pretty sure he's going to be ok.

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Lammergeier replied the topic: Is this more callamanus or something else?

He looks stunning!

Yeah, I'd say from that that he'll be fine :) From that pic his stomach doesn't look sunken in or anything like that. I'm pretty confident that a repeat treatment regime of the levamizole and he'll be in the clear :)
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Big-Ken replied the topic: Re:Is this more callamanus or something else?

You have to remember once the worms are hanging out of the fish the infestation has become very bad and left much longer the fish would die, your fish may have had these worms for months before getting to this point so while levamisole is very effect it can take 2-3 treatments before completely cleared. You might want to up your dose a bit just to end this, i have treated discus with a dose up to 13ppm and while it is really sketchy and the fish is almost comatose during a treatment that heavy it works and the discus was back to normal after a couple large water changes
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Big-Ken replied the topic: Re:Is this more callamanus or something else?

Let me clarify don't do a 13ppm dose but something close to the 6ppm range would be good
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