Lumps on Guppy - Tropical Fish Keeping - Aquarium fish care and resources
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post #1 of 11 Old 07-26-2011, 11:41 AM Thread Starter
Unhappy Lumps on Guppy

Hi everyone
I have a guppy inside my tank, which has always been active and fast moving, but recently it has been staying near the top. Then I noticed it had three lumps/sacks/round balls, one is on it's belly which is misty/clear with a brown/black substance within. The other 2 are on it's tail which are much smaller and just white. All the other fish are fine!
I can take a picture if you need it..

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post #2 of 11 Old 07-26-2011, 08:28 PM
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Ok, we need lots more information.

What size tank?
How many fish and what types of fish are in the tank?
How long has the tank been running?
Was the tank cycled?
Do you know your levels of ammonia, ph, nitrIte, nitrAte and water hardness?
Have you introduced new fish, plants, snails lately?

Also, do the lumps look like they're attached or coming out of the fish? It could be some type of parasite or tumors/cysts but we need a better description as well as answers to the questions listed to start with.

If you could get a better picture that would be helpful too. The one you posted is a bit blurry as far as seeing the definition of the lumps.

Animal testing is a terrible idea; they get all nervous and give the wrong answers.
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post #3 of 11 Old 07-27-2011, 03:03 AM Thread Starter
35 litres

3 white cloud mountain minnows
1 guppy
2 gold tetras
2 neon tetras
1 small bristlenose catfish
1 Angelicus Botia Loach
1 male Endler's Livebearer

Tank has been running from May 2010

Tank is cycled every 6 days, clean filter, remove poo
Cycled it last on Sunday 24th 2011

Dont know the levels of Ammonia,ph, nitrIte, nitrAte and water hardness but have it checked every so often.

Yes i have introduced a new plant (two weeks ago), cannot remember the name, but have a picture:


(Sorry it is wrong way up)

Pictures of Fish, sorry i cannot get any better photos than this:




The lump on the stomach looks like it is growing out, but the 2 small ones on the tail are attached round balls. They are white

As i said the one on the stomach is clear/misty, and it has a black/brown substance within. It is growing out in a ball, but not attached.
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post #4 of 11 Old 07-28-2011, 01:33 AM Thread Starter
Any suggestions would be very valuable, the ball/lump on the stomach is getting bigger and bigger by the day.
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post #5 of 11 Old 07-28-2011, 03:40 AM Thread Starter

The lump/ball on it's stomach has increased in size. The substance within is now pink/red and it like spaghetti (twisted and curvy) but on a much smaller scale.




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post #6 of 11 Old 07-28-2011, 04:32 AM
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It sounds like some kind of parasite or worm because of the way you describe the inside of the lump. Is it only on the guppy? Is there any way you can set up a hospital tank and remove him from the main tank?

You might have to treat him with a parasite med at this point like Prazipro but it would be best to truly identify the exact type of parasite if you can.

Is there a good local fish store that you can bring him to?

Animal testing is a terrible idea; they get all nervous and give the wrong answers.

Last edited by Romad; 07-28-2011 at 04:45 AM.
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post #7 of 11 Old 07-28-2011, 05:01 AM Thread Starter
Thanks for replying!

Yes it is only the guppy...
The only thing i could do to separate him from the other fish is to buy one of those clear boxes which you stick on the inside of your tank.

If it is a parasite, should i just treat the whole tank, or just the hospital box?

I will search around and try to identify the parasite....

Yes there are plenty of good fish stores, which i could take him to.
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post #8 of 11 Old 07-28-2011, 05:05 AM Thread Starter
I was just looking around...
Could it be FishTuberculosis ?
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post #9 of 11 Old 07-28-2011, 05:17 AM
indefinably a parasite =( qt it as a precaution

5x2x2 aro,highfin bat,fei feng,ST,albino tinfoil,c.perch
4x1.5x1.5 planted tetras,harlequins,
otto,WMM,2 types of celebes rainbows,rcs,amano, bamboo,red ramhorns,MTS
3.5x2.5x2 flowerhorn,pleco
3x1.5x1.5 russel's lion,blue cleaner,sixline and leopard wrasse,maroon clown pair,green chromis,scorpion,tiger cowrie,turbo,lyretail anthias,jewel,anemone,star polyp,marbled and giant green mushi,zoa
2x1x1 nano sw shrimps
22 May 2012
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post #10 of 11 Old 07-28-2011, 05:28 AM Thread Starter
Can it be treated with anything.. if so, should i treat the whole tank??
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