Weird issues in 2 of 3 tanks

[Shinyshiny054]

I bought 3 apistogramma, 1 male 1 female agasizzi (sp?!) and one female cacutoides (again, sp?!) Within a week, my other fish started displaying worrying issues. In one tank, the male apisto is prolapsed. He lives with conga teras and checkered barbs. Two of the barb females look pretty bloated. In the other tank, weird growths have started appearing. I know I should have quarantined and treated but I buy from the a lot and haven’t had issues before. What’s done is done, I’m now just looking for advice on the issues, so i know how to treat

 

[GaryE]

There's nothing to be done for a prolapse. That one looks very bad.

The praecox appear to have Mycobacteriosis - fish tuberculosis. That can only be proven with a biopsy or an autopsy, but if it were in my tanks, I'd consider it that. It is a fatal, communicable and untreatable disease.

You are not having luck with your fish right now. Mycobacter infections can brew for years, and are usually a chronic problem that radically shortens fish lives. The sores open when the disease is spreading, and it can survive bleach. I euthanize affected fish.

 

[Shinyshiny054]

Oh no!!!!! I have several fish in with the rainbows, should I separate them all now or is it too late? Is there anything I can do for my remaining otos, gourami, hillstream loach, rummy nose tetras and apistos? Or are they all now doomed?

In terms of the apisto with the prolapse, what caused this? Are other fish in the tank at risk? Two of the barbs look a bit bloated, though not pineconing - is the issue related? Should I just leave him and see if he pulls through or is he a risk to the others? I only have one spare tank, the other functioning tank is healthy.

This is a sad day

 

[GaryE]

It is sad news, and I'm sorry to be the messenger. I would absolutely love to be wrong, but those are praecox rainbows and their tb rates are notorious.
The only way to exercise short term control is to euthanize affected fish. They probably had the disease from when they were very young, before you even saw them. It works slowly, unless a sore opens or unless a diseased fish is eaten by tankmates. It's probably unrelated to getting new fish.

The sore is open, so the fish has to go. Beware, as in rare cases, it can transfer to you if you have open cuts and are run down or immune suppressed. It's rare, but it happened to lucky me years ago.

A fair percentage of fish seem to have tb, and its main effect is that a fish that might live 10 years dies around 3 or 4.

For the other tank, a dewormer might be in order. One that affects both helminth and nematode worms would be best, but I can't comment on names as every country has its own brands. That's a shot in the dark though. The prolapse could be (if this is the male you had already) from the female walloping him there. A newly introduced couple can do that. Or, a prolapse can just happen at random.