Columnaris usually fluffy in appearance, it's not just a change in scale color. I've come across the change in scale color multiple times and it hasn't seen a cure thus far but it doesn't effect them, it usually effects the scales right around the top of the dorsal and then will turn the first few rays/mebrane of the dorsal white along with it, this would be the third one I've seen happen over the last two months and I've not no idea what it is but salt did nothing for it and nor did KanaPlex or General Cure, but it never effected the fish and the fin didn't fall off or anything.
So that said, I would leave all the antibiotics and salt out of the water for now, keep an eye on the patch to see what happens but if it's purely discoloration and nothing raised on it, slimy or bumpy or fluffy then I wouldn't worry. What you need to focus on is just the water quality and keeping her in good clean water until she feels better and she can start fighting off whatever it is.
By the way, that picture is totally awesome, you definitely get fish keeper of the year!! haha I hope everything works out though!
And yes if you have IAL, use that instead of the green tea, it does the same thing but there's no point in using it if you already have IAL. And the green tea also must be pure 100% decaffeinated green tea.
Thank you so much! This morning she's surfing and not clamping, the discolouration hasn't spread, and she seems like Tina again, except she's still a little bit sluggish. THough, she has sort of orange patch on both sides of her dorsal. Almost dayglow orange when you use a flashlight. o.o; Never heard of that, but it seems to just be coloration since nothing like that comes up in searches online.
We're keeping her in ISO for now until we figure out the water situation, but I still don't know what to do about her permanent residence. After a day or two should we put her back in her new, tall tank and see if she gets used to it? Should we put her in the long one again? How long would it take maximum for her to get used to her big tank before we could assume she just hates it?
Maybe....just maybe she's marbling? I know she didn't seem the type....but the genes can literally pop up anywhere! As for slowing down, she's getting older so that could be a factor as well, not all retain their energy through life.
And she could take up to a week or more to get used to her tank, so I'd just put her back into it when you think she'll be up to it. I'd give her at least till Sunday/Monday in the ISO though, it won't hurt anything
Yeah, definitely keep her in that stuff till the water quality improves, no sense in throwing her back into the bad stuff to just start all over again! I'm glad it was the simple water quality issue though and not something worse for her Can you get a picture now? I'm really interested in those different colored spots!
Oh wow, she's grown up so much since I last saw her!!! How adorable!
Are you talking at that white-ish speck about two scale rows down from her third dorsal ray? (I feel like i'm playing Battleship lol; C5! Yes! I sunk your battleship!!) anyway, I'm not sure about the orange but it does look natural to me. I'd just keep a very close eye on it to see what it does, you can take pictures of her each day and then look back at her to see how it's progressed