I've had this dg for a few days now and noticed a strange bump forming on its side. Wondering if anyone knows what it is/if it could be contagious to my other fish in the tank.
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Iridovirus is found in bettas as well. We have already had corys die on this site because they came in contact with feces at the bottom of the tank. We need to be aware that this has crossed to different species of fish. This gourami is not exhibiting any of the normal signs of Iridovirus. I wish I could point to a specific cause but I can not with what I see.A few answers to the questions below could help give more clarity please.
Well what are your parameters?
What size tank?
It looks like you have another dwarf gourami in there, which could be due to fighting. What other tankmates?
Dwarf Gourami also have a disease that is only contagious to other Dwarf Gourami, Iridovirus which can cause bumps. It has no cure and is unfortunately fatal.
Before the Iridovirus was ID-ed, the common thought was it was TB that these fish caught. Problem with Iridovirus is it can have several symptoms. It "opens" the immunesystem and the fish dies cause of other infections. This definitely is one of the symptoms I have seen in hundreds of cases in the past years.If it is TB, it is a bacteria no fish med can handle. Humans can catch it - I did. Six months of antibiotics later, and it was gone.
You may see why I would euthanize.
All it does to humans is create the same sort of surface sores.
A lot of fish carry it, and it shortens their lives. They encyst it internally, but when it breaks out it presents as a squared bump which eventually breaks open. The bacteria flood out, and can overwhelm other fish, which develop sores and die.
Sometimes, healthy fish can encyst a new attack, and live about half their possible lifespan, before stress etc lets it break out.
Symptoms are diverse, which is why everyone hates to do an educated guess/diagnosis. Wasting, flank sores, twisted spines and sudden deaths. It can always be seen as like something else, if there is no laboratory culture.