Treating fish with parasitic worms, fish stopped eating and has stringy white pooh.
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- Опубліковано 7 лют 2025
- Fish that stop eating and begin emitting translucent or stringy white faeces can be infected with various parasites. In this video we show you how we diagnose and treat a flowerhorn cichlid fish infected with parasitic worms.
Infected fish may show clinical signs of chronic weight loss, potbelly, “poor doers”, gut inflammation, mucoid white faeces, and inappetance. It is a zoonotic disease (i.e. humans can potentially catch it!). In humans, the clinical symptoms include diarrhoea, abdominal pain, weight loss, dehydration. Capillariasis may be fatal if treatment is not given early.
Your tank may become infected if fed tubifex worms, or by introducing infected fish. It has a direct life cycle, and can reinfect the same fish, or other fish in the tank, building up in numbers.
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Disclaimer:
The opinions expressed on this channel and by Dr Loh are created for educational and informational purposes only, and are not intended as a diagnosis, treatment or as a substitute for professional Veterinary advice, diagnosis and treatment. If you have a question or concern about your own fish, please consult a local Veterinarian or professional to address your needs or concerns, or for advice on specific treatments for your aquatic pets.
The Fish Doctor Channel does not endorse or recommend any commercial products, medical treatments, pharmaceuticals, brand names, processes, or services, or the use of any trade, firm, or corporation. Names are for the information and education of the viewing public, and the mention of any of the above on the channel does not constitute an endorsement or recommendation by The Fish Doctor channel or Dr Loh.
THanks Dr. Loh, this video saved my flowerhorn’s Life! He is now on the fast track to recovery. Today he ate for the first time in 2.5wks and couldn’t be happier! Once again, thanks a million!!
where did you get levamisole?
Thank you for giving out some proper information
Thank you very much for taking the time to make this video! You really helped me out tonight with what was a mystery fish issue in my tank! Side note: Those two fish behind you interacting with each other through the tank wall was pretty cute.
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I saved my flowerhorn with this treatment thank you very much doctor
narendran ravi what dosage did you used? Pls help thanks
What is the medicine name and dosage plx
I know this video is a few years old now but I love seeing real biology when it comes to fishkeeping. I am currently treating one of my cichlids with ivermectin but I will bring some feces in to work with me tomorrow to check out the progress and see what I can find :)
Let us know your findings
@@thefishdoctor8746 Yes, I brought a feces sample into my lab and he did have a couple of different parasites that I could see. It was not the stringy white feces that first alerted me to my electric blue acara (who is so sweet) being sick. He usually comes up and eats from my hand but he wasn't and his color started to look washed out. That's when I noticed the white feces and quarantined immediately. He is doing much better now. His tank mates (rainbow fish, bristlenose, and an angelfish) all seem fine but I am also putting them through a round of meds before I put my cichlid back with his friends.
Please do a video explanation of the most common pathogens and parasites found on freshwater and saltwater fish. And explain what they are the cause and the best treatments to try.
2mg levamisol per litter, for three weeks, once a week. Thanks :)
Please always mention the medicine names in text format on video, so that all can exactly know the medicine names...... Thank you
Ya what medicine pls Mention...
My angelfish also have same problem...which is medicine is required and how to use
@@TG_64 metrozyl
@True Car Lover DM me bro
@@TG_64ivermectin or levamisole. Praziquantel and fenbendazole also work quite well.
@@TG_64😊😊😊😊
Those filters are genius.
Hello Dr., 6 weeks ago, we added 12 discus fries(1.25" to 2.25") from a local breeder (Boston MA tap water) in our established 75gal planted community. (Let me just share that this gentleman gave us 8 "runts" that was below his standards because of our interest in attempting our hands on discus!)
Chemistry has been stable; 7.6 pH, 0 ppm for Ammo, NO2, and NO3 at around 78 degrees. Our plants have been pearling, we gravel vac daily for loose detritus, everyone has been active and eating extremely well!
Now, 3 weeks ago, we lost one of the smallest discus fry, followed by a second 5 days later. (The first two fries had physical deformities; one had a missing eye, the other deformed gill plates.) A third fry died a week after and today our fourth.
Now, Today's fry had a slightly bulging belly and what appeared to be white, curly and stringy fecal matter from its anal area. I had noticed also one of the (2.5" live) larger fry with a similar white strand 2 days ago, which raised some concerns for the tank.
Should we treat the whole tank, and for what...what would be the ideal medication for a planted community with shrimp and snails? TIA
Many of our treatments have not been trialled for safety in shrimp and snails, so I'm unable to advise. In such cases, it's advisable to remove the invertebrates from the tank during treatment and then return them after a period of 1 month, after carbon filtration.
i'm learning so much from this dude. so thanks dude
Thanks for posting these videos these r very helpful
Dr Loh, very glad I found your channel. I don't know how many of your videos I watched until I could stop. Very informative. I learned a lot.
Now to my question and the reason I started watching in the first place.
We had a series of deaths among our African Cichlids. Very typical signs of bloat and Hexamita. Every time we thought that we beat it, a new individual got sick. We haven't been able to treat a single one. Maybe we didn't start in time or maybe the medicines haven't been the right ones. We have tried with metronidazole, sterazine and mebendazol. We have tried treating the whole tank and also treating the patient alone. Yesterday, our Geophagus Steindashneri drew her last breath. Before that, her partner died in the same disease. It's always one fish at the time. Never several.
The fish starts by hiding and being alone. Doesn't feed. Have stringy white poo. Breathing frequently but not like gasping for air. After a week or so, it starts swimming as is it couldn't hold it's balance, like a drunk person. When you can catch it just by hand, it's gone very far. Mucus covers the body and in the final stages the fins starts to deteriorate. They just kind of melt away.
We tried treating them from the first signs and not treating them at all. So far no one survived.
Now we have a Danakilia Sp. Shukoray who's been sick for some time now. She is isolated for now and I'm treating her with Flagyl at the moment.
My husband is a doctor in an ER and can prescribe medication equivalent to veterinarian medicine. So the Flagyl and Vermox came from him. The dosage has been exactly what's subscribed by regular fish meds.
I recently ordered a microscope that can enlarge 600x. I saved the Geophagus in the freezer. It should arrive today.
Is there anything you can suggest that my husband should prescribe other than these meds? Is levamisole possible to prescribe for a regular doctor?
Do you always have to know the bacteria to treat it? What could work in a broad spectrum?
The microscope I ordered doesn't have a USB extension so I couldn't possibly take pics but my husband is an expert in recognizing internal critters so he could absolutely be able to see and identify the bacteria.
As you can see from my long post, we are desperate. We have lost so many nice and expensive fish here. Also, we live in Sweden and can't therefor come with our fish to you.
I hope I described this as thoroughly as possible.
(1000L/265G tank. All our water parameters are excellent, water changes weekly and feces are syphoned. Only Af. Cichlids are the victims. None of the other fish ever died from this.)
Thank you so much!
I just got some from Ebay,its only like 100SKR for the Levamisole for a 1000 liter
Sounds complex. Submit fish for testing to a veterinary laboratory. I offer such services in Australia.
The white body mucus, drunken swimming, and advanced fin rot sound like columnaris, which is a vicious bacteria. Once columnaris is inside a water column, it’s impossible to get rid of without a full breakdown and bleach cleanse of absolutely everything in the tank. Highly contagious, very common, especially in larger chain stores.
I recently purchased a school of panda corydoras, and they started exhibiting signs of columnaris while in quarantine. Despite aggressive antibiotic treatment, I lost all but two of them. One of the survivors has such advanced fin rot on the tail, he probably won’t live beyond a year, if that.
Columnaris is an absolute plague. Acraflavine and terramycin do a good job of combating it, though.
as always very informative and spot on!
My Ottocinclus catfish has stopped eating from three days what should I do please help
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Do the lights need to be off when treating with levamisole?
I’ve been trying to get rid of internal parasites for many many months now. I have used a couple different medications multiple times with seemingly no luck. I haven’t lost any of the 11 discus yet, but it’s affected weight gain greatly with many of them.
Can you tell some details about treatment? After adding the medicine when is the first water change and how much med will be added again?
Amazing video that even showed how the parasite looked like. Now I wanna get a microscope and check my fishes poop hahaha. You just earned a new subscriber.
thank-you for the video i have a 10 gallon tank of swordtail fry aprox 3-4 weeks old once in a while iv seen a couple flashing I see no clamped fins or spots on them or their fins do i need to mediate and if so with what could you please do a video and do a touch up on this situation or guid me to someone that has done the video so i can learn what to do
Great video keep it up doc we need more of your peeps to make videos.
Finally the answer what's the problem with my betta
omg thank you so much for posting these videos. More legit info = more healthy fish :-)
Your fish cm
My Ottocinclus catfish has stopped eating from three days what should I do please help
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Hi Fish Doc!!! Thank you so much!!
What a wonderful video thank you!
Hello, thank you for creating your channel.
How can you tell the difference between internal parasites and mycobacteria as the symptoms are initially the same?
And if it’s mycobacteria does it survive in the environment without a host? Should you bleach your tanks to decontaminate everything? Can it be present without the fish showing clinical signs?
levamisol is banned in Britain, what would be the UK substitute?
Dr. Richmond Loh, kudos on the video excellent, much respect for taking the time to share your knowledge.
Thank you
Thanks Dr Loh
Could you please make video on anchor worms
Do you sell treatments?
Do you ever work in Melbourne ? If so how can I get in contact?
Thank u sir ur medication is best and it work plz sir do video for chiclid ich
See ua-cam.com/video/xn2EbgxDiZk/v-deo.html
What would you recommend fembendazole or praziquantel?
I cannot get levamisole tablet were I lived can I used ivermectin and wat the dosage
i keep seeing tanks without substrate. is that how a proper hospital tank should look? also, what is those mineral pebbles in the filter? medication or trace elements?
Hi, thank you for making this video. So for levamisole treatment it is once a week for three weeks and not once a week at alternate weeks right? There is so many confusing instructions online. Some says eggs only hatch after 2 weeks so the second treatment should only be after 2 weeks.
hello doc ,your medicine is metronidazole??
How does the water get in that filter?love the idea greatly appreciate the information!
Handsome, smart and taking care great care of animals = jackpot
in canada we dont have any parasite medicine sold... any home remedy? pls help
Is true Epson salt in the food can help as well to eliminate parasites?
I want to know this too 😭
It won’t work
It should work from what I know
Can also be used once a month for prevention is what I ve heard
In my experience Epsom salt does not kill off parasites. It works great for a salt bath for 10 minutes for swim bladder issues, but it does not effect the parasites that I've encountered
Ohhh! Thank you sooo much!!!
Please tell me the exact dosage. I can not completely get wording at 2:19. Your tank is 200 liters. Dosage of 100 % levamisole is - 2 mg per liter (200 liter tank - 400 mg). You have 85 % levamisole. So your dosage should be approx - 600 mg. Right? I hear you saying smth like "quite 5 grams......". Please correct me. I would really appreciate your help. What is the exact dosage for 200 liter tank - for 85 % Levamisole and also for the 99 % Levamisole?
so our oscars we feed them pellet food and tilapia fillets can that make there poop stringy/bulky and have orange chunks he still eats to
How do u spell that med for the fish
Hey doc how should i add the second dose after the one week water change? Should i add the dose required only for the quantity of water changed or should i add the second dose the same quantity as the first?
metronidazole vs levamisole can you use both at same time and are there diff symtoms for the diff parasites besides stringy poop?you should do a video on the different internal parasites.
Thank you so much!
So if i got the conversions right,
.5 mg for a 53 gallon tank (55 im guessing)
So for a 200 gallon tank i would need 2 mg
And for a 10 gallon tank .1mg
Ive seen other youtubers that were suggesting 10mg every 3 weeks for a 200 gallon.
Your method is 2mg every week for 3 weeks.
What are your thoughts of dosing preventive? Every 3 months?
What specific med is best to treat sunken belly is cichlids?
please tag a link for the medicine you had used !! My betta has not eaten for a week out of the blue . could you take a fece sample from him? Ive fed him everything he likes and seems like hes interested but has a "sore throat" reaction.
Good job doc
Doctor can you tell please what will be the dosage if i use ivermectin instead of levamisol?
Fenbendazole works great too
You should include the medicine name on details section, labamasole is that it?
Levamisole
Love these vids, can't wait for more.
You are help teach and learn people? Really
Hi...very good video.👍.do you have any video that you can explend more about sunken belly in african cichlids..what i can used for cure my fish?.thanks and regards
Dr.My flowrthorn is too sick as it not eating anything..its suffring from the same disease aswell as anus out.Its colour is fading but its moving well.and its one side gill is not moving.Please help me out what to do as soon as possible..please
My Ottocinclus catfish has stopped eating from three days what should I do please help
Use metroxyl 400 tablet
In case you didn’t get answers by now- you can prepare fresh garlic and the chemical present in it will attract your fish no matter what and they will eat it. Good for if they stop eating.
Hi Doctor, few guppies in my aquarium are infected with camalanus worms.. Red color worm showing up at the vent. What treatment do you suggest?
Dr,how many praziquantel grams for 100ltrs?
SO is this only for Capillariasis parasitic infections? round worms? Or can this be used for all general parasitic infections? Thank you! My fish refuses to eat, has long stringy white poop but I don't have microscope to effectively diagnose and examine what specific parasitic disease is present.
Dear sir.
I have discus fish with white poop disease. I use metronidazole tablets since there are no metronidazole raw material to purchase.
Please tell me the dose to treat them. And how many days . What is the water changing rate. Please help
Bilgileriniz için teşekkür ederim Türkiye'den sizinle iletişim kuruyorum baligim bu hastalığa yakalandı kullandığınız ürün nedir ne yapmam pazim teşekkür ederim
My Ottocinclus catfish has stopped eating from three days what should I do please help
Can I use albendazole instead of Levamisole as I am not getting Levamisole solution
The thing is,if you keep using the same wormer, the worms will become resistant to the same medication !
Rotation is important !!
I cant understand most important part which medication you are using. is it something we can buy in pet shop or it is pet prescription receipt ?
how did the fish contract this parasitic disease, how can it be prevented ?
Thanks for video..Here in our country we have the antihelminth medications as tablet...so how do we use it to deworm?? powder it?? Does it dissolve in water?
Levamisole is water-soluble so should dissolve in water. Ensure to examine the tablet's additional ingredients, as certain fillers may trigger a bacterial bloom, posing a risk to aquatic systems. Test its safety in a fish-free aquarium and monitor water parameters for potential harm to fish.
Thanks for the informative videos..I would like to know the dosage of levamisole dewormig tablets for angelfish
My uncles flower horn is suffering like this. Whats the name of the medicine ? Thank you so much.
Sir my question is whether metrogyl ot tetracycline to be used in case fish not eating food....?
And tubifex or blood worms, are they ok as live food
Means can they cause any infection...?
potresti indicare il nome dei farmaci e le quantità?
Very nice thank you so much , but where I can get this live Amazon??
Hi Dr. Loh.. could you tell me what is the magnificent you use?? 100x?
I had a very stable, South American cichlid tank for about two years, a 120 filled with huge, red severums and blue acaras that I raised from juveniles. Suddenly my severums and acaras began literally dropping dead with no visible signs. I try to avoid medications whenever possible but this was severe and fatal. Over those few months I treated them with almost every category of drug as I had no idea why they'd just start dying when I could think of no changes being made. Eventually I could see white stringy poops and what 'looked like' septicemia on the dead ones. In the course of 3-4 months, they were treated with salt, Epsom salt, Malachite Green, nitrofurazone, kanamycin, metronidazole, erythromycin, praziquantel, fenbendazole, all in my desperate attempts to see them positively react to anything to no avail. I simply had no idea why one day, they were active and eating and the next day dead on the bottom with not one physical sign I could see. Finally, my last attempt was after I saw this video and tried exactly what you described but frankly, after 4 months of dying fish, I held little hope. In just 24 hours, the gravel was carpeted in red camallanus worms! By the time I saw this, ordered Levamisole and tried what you prescribed, I lost about half of my fishes but since your treatment, the dying has ceased and any symptoms they may have had are gone. I've been fishkeeping since the 1970s and this was by far the worst pathogen I've encountered. Had I not seen this video, I'd probably had to euthanize the entire tank. I can't thank you enough. You are a public service!
Dosing 2.5 mL of Fenbendazol per 10 gallons to treat against Camallanus worms. Results are not looking good after a week of dosing and I’ve lost half my stock. What did you do to get your results?
Dr Richmond how can you tell me the difference between the male and female oscar?
Hi, great video. Question. When your fish produces white poop with a little black at the end does that automatically mean it can have an internal parasite? Thanks
M y platy gave birth yesterday and now she is back in the tank she has gone a bit fluffy looking and her fins are shredded. What is
wrong with her? She kind of keeps sinking to the bottom
I have a large Angel fish with exactly those same symptoms and have added the treatment yesterday.
Just one thing though, how long do I leave it before I do a partial water change as I don't want to dilute the medicine that's been added?
Thanks in advance!
Where did you buy it?
@@HCBCHEMISTRY Ebay, it's usually a bit cheaper than buying the same brand from a shop
@@MakoyUnggoy thank you, what's it called exactly?
@@HCBCHEMISTRY The one I bought was NT Labs Anti-Fluke & Wormer, but if you can buy it will depend in what country you are in I suppose compared to me
Can you do a video on the state of fish medication in Australia. Every time i go into research one, they come up as junk? like Melafish is tea tea oil, Pimafoix is Malaleuca oil, Malachite green is just a salt dye, and Methylene Blue is also just a dye. It seems that since we can’t get internal grade Antibacterials, without a vet prescription most people are wasting money and would be better off with Espom salt and a heater.
My goldfish is having white poops. I gave him a salt and Paraguard dip and now he’s acting stressed sitting on one side of the tank by the bubbler. His poop is long, white and stringy. What can I do? I have metronidazole and Kanaplex handy at home. I don’t want to lose him, he’s big and my favorite fish!
Just saw your channel, hope you have new videos, thanks
Thank u for the info. what is the best was to treat for ick
Down south Cichlids watch ua-cam.com/video/xn2EbgxDiZk/v-deo.html
Please my discus is facing the same problem. I want the medicine name. Help my discus.
My oscar fish ate a fish that had parasites stringing white poo but I'm not seeing signs of stringing white poo on my oscar seems fine to me idk
Great video! I hope i can learn much from you and can use it on my fish (what i hope i'll not have to!). New Sub!
I think my black ghost knife fish has this, can I show the picture to you in a way to double check? I want to make sure to know what to do about it
I am glad I found your channel.. my v-tail beta Male has been let active and seems not to want to eat.. I found a stringy thing where his under dorsal fins and it had like a little clump at the end and I don’t know what to do.. just a few days ago it was gone like he pooped it out.. i DONT know wether it’s a wolf or something but my fish won’t eat and is just sitting at the bottom of the tank breathing yes but just sits there
Can a fish that had white poop disease get the same disease again (specifically a flowerhorn)
Hey Dr, my arapaima has this infection and it sucked him in a lot, he looks very skinny and will not eat, does this sound like the same type of sickness? And also, does that mean the whole tank has the parasite if it was only my arapaima showing the signs? These are baby arapaimas about 8-9 inches long. Thank you please upvote so he can answer my question. I’m thinking about ordering this medicine ASAP please reply.
Hello dr. I have a pond of 18 ' by 8 ' by 4' with a waterfall , pump circulates 4000l/h' temperature this time is between 25 to 30 degrees, not much hiding places ' lot of plants in separate chamber with a diy filter' ph normal' and other parameters probably normal ' water is clear now' the pond is concrete and newly made about 50 days operating. Question is most of my fishes are flashing from few days but otherwise are healthy ' eating well' moving actively what could be the problem?
Need help. I called a local pond store that whole sales tubifex worms to petstores in area and they seemed to not know that tubifex worms can carry parasites. I'm pretty positive that my fish we're infected from tubifex worms.
can salt kill internal parasites doc?
Would u spelling the med name, please? ☺️🙏 Its difficult to hear correctly.. A lot of med with simillar suffix "sole" or zole".. thank for answer.
In this video, we used levamisole.
My betta fish has not been eating for days and is not moving much, i don't see any external parasite on its body.
Which medicean liquied
What microscope would you recommend for the average aquarium owner?
where did you get that treatment
You can get that treatment from your veterinarian
What is the cause please? Is it food?
Can we give levamisol safely to Siamese fighting fish and loaches.
Pls mentaioned dosage and alternative as levimisole is banned in few countries.