How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask Dr. B. Your Own Question

Dr. B.
Dr. B., Board Certified Veterinarian
Category: Veterinary
Satisfied Customers: 6269
Experience:  General practice veterinary surgeon with extensive experience in a wide range of species.
60269376
Type Your Veterinary Question Here...
Dr. B. is online now
A new question is answered every 9 seconds

I have a goldfish with a tumor that has grown to about 1.5

Resolved Question:

GoldfishI have a goldfish with a tumor that has grown to about 1.5 inches in the last few years. He lives in a 40 gallon with 2 dojo loaches (40 gallon tank has 30 gallon sump) He has existed peacefully with my dojo loaches for a long time but recently I've noticed the dojo loach nibbling on the Goldfish's tumor. Last night I saw that the goldfish is missing a huge chunk of the tumor. It looks like it is being eaten by the Golden Dojo loach. As of last night, my goldfish doesn't want to eat and he floats towards the surface. I can tell he is in distress but I am not sure what to do. He is a big fish about 5-6 inches in length and weighs alot. He is about 5 years old. I am thinking of separating the Golden Dojos into their own 26 gallon tank. What do you guys think? Have you guys seen this kind of behavior before?

Submitted: 1 year ago.
Category: Veterinary
Expert:  Dr. B. replied 1 year ago.
Hello & welcome to Just Answer/Pearl. I am Dr. B, a licensed veterinarian and I would like to help you with your wee ones today.

I would strongly advise that the goldfish be isolated from other fish to protect him from further damage by his 'friends'. The behavior you have is not uncommon to fish and it is quite likely that with the now open wound this fish may be attacked again. Loaches are carnivorous and carnivorous fish can 'pick on' weak/sick fish. (Loaches are not alone in this. If the roles were reversed, the goldfish would have done the same to a loach. And if you look at your fish food the majority are primarily composed of fish meal). As well, if the mass had been outgrowing its blood supply there may have been some mild tissue necrosis present and this would have further attracted the loaches to it. Therefore, in regards XXXXX XXXXX question, the behavior is very common and you will likely see it again if they are kept together.

Now in regards XXXXX XXXXX goldfish, I agree with your ruling out bacterial and fungal triggers for the mass. In fact, if we were considering a trigger (other then traditional cancer form dysfunction cancer cells) we most commonly see goldfish tumors triggered by viral causes (usually herpes). But no matter what the trigger for the mass was, I would say that the goldfish's current behavior does raise concerns that he may be in shock or secondary bacterial sepsis may be present. Therefore, since you are due to isolate him, you might consider supplementing him with some aquarium salt (for shock, start at a 0.1% dose) and covering him with a broad spectrum antibiotic that will cover against aeromonas (the most common bacteria that infiltrate wounds in fish). In regards XXXXX XXXXX choice, kanamycin/doxycycline would be a good option. If that is not available, then you can treat with erythromycin (plain Maracyn) or tetracycline, but treat simultaneously with minocycline (your Maracyn-Two) for the Aeromonas.

Overall, the behavior is not uncommon but is rather one of opportunism that is common in carnivorous fish. But in this case, you need to isolate this fish to protect him from further damage and support him to get him through this traumatic event.


I hope this information is helpful.
Please do let me know if you have any further questions.
If you have no further questions, feedback is greatly appreciated.

All the best,

Dr. B.

-----------------------------------------------------------------------------------------------------------------

Please remember to rate my answer, so that I may receive credit for assisting you today. IF you have any lingering questions or concerns, please stop and reply to me via the REPLY or CONTINUE CONVERSATION button with the issue you have. I will be happy to continue further and do everything I can to provide you with the service you seek. If you are satisfied with my help (not necessarily the disease you pet has or the website), please click the 4-5 stars or associated happy face so that I may receive credit for my assistance.

Customer: replied 1 year ago.

Dr. B. Thank you so much for your answer. It was very thorough. I have two more questions. I only have a 10 gallon hospital tank. I believe the minimum for a fish of his size would be 20 gallons. Can I keep him in the 10 gallon while he receives treatment? I currently have Kananycin (powder formula) and MediGold (food pellets with sulfadimethoxine and ormetorprim sulfa). Can I give him both? After treatment I will move him to the 40 gallon and put the dojo loach in a 20 gallon long.

Expert:  Dr. B. replied 1 year ago.
You are very welcome.

It would be ideal if the hospital tank was bigger but as long as you keep a close eye on the water parameters it should be fine. And sounds like the relocation of the loaches and goldfish (after treatment) sounds in order.

In regards XXXXX XXXXX choices, it would be fine to use both together to widen your treatment spectrum as both products have different mechanisms of action. And since you noted that his appetite is poor, having the kanamycin on board will ensure that he does have some if good antibiotic coverage even if he won't eat the Medi Gold.

Best to you both,
Dr. B.
Dr. B., Board Certified Veterinarian
Category: Veterinary
Satisfied Customers: 6269
Experience: General practice veterinary surgeon with extensive experience in a wide range of species.
Dr. B. and 3 other Veterinary Specialists are ready to help you

JustAnswer in the News:

 
 
 
Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.
 
 
 

What Customers are Saying:

 
 
 
  • It was so professional, so personally concerned (as we were) and you answered all of our questions. George and I are so happy that I found "JustAnswer" on my Google search -- you are now in my "Favorites" list! And, yes we do love our kitty - she makes our life complete! Bev & George Boca Raton, FL
< Last | Next >
  • It was so professional, so personally concerned (as we were) and you answered all of our questions. George and I are so happy that I found "JustAnswer" on my Google search -- you are now in my "Favorites" list! And, yes we do love our kitty - she makes our life complete! Bev & George Boca Raton, FL
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
  • This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex Los Angeles, CA
  • Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult. GP Hesperia, CA
  • I couldn't be more satisfied! This is the site I will always come to when I need a second opinion. Justin Kernersville, NC
  • Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around. Esther Woodstock, NY
  • Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know. Robin Elkton, Maryland
 
 
 

Meet The Experts:

 
 
 
  • Dr. Andy

    Medical Director

    Satisfied Customers:

    2630
    UC Davis graduate, Interests: Dermatology, Internal Medicine, Pain Management
< Last | Next >
  • http://ww2.justanswer.com/uploads/VE/vetforyou/2012-6-20_33122_PearlPhoto.64x64.jpg Dr. Andy's Avatar

    Dr. Andy

    Medical Director

    Satisfied Customers:

    2630
    UC Davis graduate, Interests: Dermatology, Internal Medicine, Pain Management
  • http://ww2.justanswer.com/uploads/1I/1ISUDVM/2011-3-1_22028_Honeymoon2005075294928803490646858.64x64.jpg Dr. Bruce's Avatar

    Dr. Bruce

    Veterinarian

    Satisfied Customers:

    1656
    12 years of small animal veterinary medicine
  • http://ww2.justanswer.com/uploads/RY/rydergar/2012-6-6_192240_IMG0328.64x64.JPG Dr. Gary's Avatar

    Dr. Gary

    Veterinarian

    Satisfied Customers:

    1451
    DVM, Emergency Veterinarian, BS (Physiology)
  • http://ww2.justanswer.com/uploads/PC/pcbobber/photo.64x64.JPG Dr. Bob's Avatar

    Dr. Bob

    Veterinarian

    Satisfied Customers:

    1306
    35 years in practice
  • http://ww2.justanswer.com/uploads/doggfone1/2009-07-16_133633_vet_pic.jpg Dr. Scott's Avatar

    Dr. Scott

    Veterinarian

    Satisfied Customers:

    865
    12 years of small animal, equine and pocket pet experience in medicine and surgery.
  • http://ww2.justanswer.com/uploads/AN/andrewDVM/2012-4-27_12585_iStock000011751407XSmall.64x64.jpg Dr. Drew's Avatar

    Dr. Drew

    Veterinarian

    Satisfied Customers:

    1889
    Small Animal Medicine and Surgery
  • /img/icons/shirt.jpg Dr. Jenn's Avatar

    Dr. Jenn

    Veterinarian

    Satisfied Customers:

    1225
    Practicing small animal medicine since 2004 , also involved in working with animal rescue groups.