Originally Posted by LittleBettaFish
I'm pretty sure dropsy is just a symptom of kidney failure and the underlying cause can be anything from bacterial to parasitical.
I had a fish present with dropsy (bloating and 'pineconing') and it turned out to be the result of a massive parasite load.
If it was only TB that caused it, anyone with dropsy affected fish would be told to nuke their tanks as that is one nasty disease and pretty sure it is what can cause flesh-eating bacteria in extremely rare cases in humans.
I'm pretty ignorant when it comes to fish but I know the primary mammalian flesh eating disease is caused by a streptococcus bacterium (though others have emerged--scary, isn't it??) not a mycobacterium. From what I've read on the fish TB it is really nasty stuff, though.
So it's safe to say that while fish TB causes dropsy in bettas, it's not the only disease to cause dropsy in bettas. Correct?