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Is this a parasite?
- Thread starter Carp890
- Start date
How long has the white mark been there for?
Did it start out as a red spot?
How long have you had the fish for?
Have you added anything to the tank in the 2 weeks before this started?
Does it stick up from the body?
Do the rainbowfish get lots of plant matter in their diet?
Did it start out as a red spot?
How long have you had the fish for?
Have you added anything to the tank in the 2 weeks before this started?
Does it stick up from the body?
Do the rainbowfish get lots of plant matter in their diet?
OP
OP
Carp890
Fish Fanatic
Not sure how long lts been there, the fish is been in 6 months, it sticks out from the body, lots of different food good quality vitalis.
No marks on other fish? No new fish or plants, should I try to remove it?
No marks on other fish? No new fish or plants, should I try to remove it?
CaptainBarnicles
Moderate Pleco Tolerator
Staff member
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Looks like the tumours that grew on my dwarf rainbows. I assumed it was TB because they all ended up gasping, not swimming or eating and I ended up euthanising them one after the other 
Unfortunately I am thinking the same as CaptainBarnicles about Fish TB. Melanotaenia praecox are regularly infected with it and if the fish has been in the tank for more than 24 hours, chances are the bacteria are in the tank and probably the other fish. You can euthanise it if you like but I wouldn't bother removing the fish. Just monitor it and see how it goes. If it turns red and becomes an ulcer, then euthanise the fish.
If they get lots of plant matter in their diet (50% or more), they usually do a bit better with the disease, but they still end up dying.
At this stage you should assume the aquarium has Mycobacteria (Fish TB) in it and avoid putting your hands or arms into the water if you have open wounds on your skin. Mycobacteria species (Fish TB) can get into the wounds and cause localised infections called granulomas, which need a very long course of antibiotics to treat. So avoid getting aquarium water on open wounds and wash hands and arms with warm soapy water after doing anything in the tank.
If you have several aquariums, try to use different equipment on each tank but chances are the disease will be in all your tanks (assuming it is Fish TB).
When rainbowfish are dying from Fish TB they are fine one day and the next day one will be swimming by the surface or near a filter outlet breathing heavily. They stop eating, do a stringy white poop. Bloat up overnight and die within 24-48 hours of showing these symptoms. If you see a fish with these symptoms, euthanise it immediately and throw the body in the bin, or burn it, or bury it in the garden. Do not flush the body down the drain, and wash your hands with warm soapy water after dealing with the body.
If you have a number of fish dying from these symptoms, it's a good idea to get one or two fish necropsied by a fish vet to confirm Fish TB.
There's more information about Fish TB at the following links. There's also a link about it where it's currently being discussed.
www.fishforums.net
www.fishforums.net
If they get lots of plant matter in their diet (50% or more), they usually do a bit better with the disease, but they still end up dying.
At this stage you should assume the aquarium has Mycobacteria (Fish TB) in it and avoid putting your hands or arms into the water if you have open wounds on your skin. Mycobacteria species (Fish TB) can get into the wounds and cause localised infections called granulomas, which need a very long course of antibiotics to treat. So avoid getting aquarium water on open wounds and wash hands and arms with warm soapy water after doing anything in the tank.
If you have several aquariums, try to use different equipment on each tank but chances are the disease will be in all your tanks (assuming it is Fish TB).
When rainbowfish are dying from Fish TB they are fine one day and the next day one will be swimming by the surface or near a filter outlet breathing heavily. They stop eating, do a stringy white poop. Bloat up overnight and die within 24-48 hours of showing these symptoms. If you see a fish with these symptoms, euthanise it immediately and throw the body in the bin, or burn it, or bury it in the garden. Do not flush the body down the drain, and wash your hands with warm soapy water after dealing with the body.
If you have a number of fish dying from these symptoms, it's a good idea to get one or two fish necropsied by a fish vet to confirm Fish TB.
There's more information about Fish TB at the following links. There's also a link about it where it's currently being discussed.
Questions regarding fish TB
So I have been reading things in Manual of Fish Health and this forum and have a bunch of questions regarding fish TB: 1. Why TB are common in fish from south/asian farm? 2. Can fish get TB even if you don’t buy new fish? 3. I always have cuts on my hand (I don’t know how?) How many percent can...
www.fishforums.net
TB, and effected fish…
So I’m not really understanding this, as it wasn’t around, when I had tanks 20 years ago ( or at least hadn’t been diagnosed ) Rumored to have come from Asian farming techniques… some fish species seem to be more susceptible to it than others ( my 1st experience, was with yellow axelrodi...
www.fishforums.net
Looks like the tumours that grew on my dwarf rainbows. I assumed it was TB because they all ended up gasping, not swimming or eating and I ended up euthanising them one after the other
Could it be Lymphocystis? https://fitzfishponds.com/blog/fish-disease-spotlight-lymphocystis/
no its not lymphocystis
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