Oh Debs... I'm so sorry...

How is the sibling with the newly curved spine acting (anything unusual other than the curved spine... lethargic, hiding, darting about)? Is he still eating?

Fish can display curved spines from any illness in general.... especially b/c Trooper didn't experience other traditional signs of TB like wasting away and fading colour. This can be viral too... which unfortunately there are no meds to treat a virus.

You may want to isolate this little guy and begin an antibiotic treatment (hopefully, this is bacterial and he will respond). Can you see any other signs of illness?

You can certainly try the Kanaplex (1/2 the dose but dose every day) or MI/MII... I believe you did RI+ and MII with Trooper... so perhaps a broad-spectrum antibiotic might me required here. As always... can you also check for velvet, as well?

Also, of course, ensure the water params are and remain pristine.

I'm sorry you're experiencing this, Debs.

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