What's Wrong With My Rainbowfish?

nbalaw2016

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Hey all,

I have seven Millennium rainbows in a 45g tank, 3m and 4f. Six of the seven are active and playful. This one appears listless and hangs out by herself in open water. I don't see any obvious abnormalities. Any thoughts? Thank you!

Add'l details: Tank at 81, water recently changed (observed this behavior both before and after a 40% change this morning). I don't think the parameters are the problem, as the other rainbowfish seem great. If a photo of this fish in comparison to the others helps, I can take one as well.
 

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Momgoose56

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nbalaw2016 said:
Hey all,

I have seven Millennium rainbows in a 45g tank, 3m and 4f. Six of the seven are active and playful. This one appears listless and hangs out by herself in open water. I don't see any obvious abnormalities. Any thoughts? Thank you!

Add'l details: Tank at 81, water recently changed (observed this behavior both before and after a 40% change this morning). I don't think the parameters are the problem, as the other rainbowfish seem great. If a photo of this fish in comparison to the others helps, I can take one as well.
What are the parameters?
 
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nbalaw2016

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.1 (using API kit, I have trouble getting to exactly 0) / 0 / 10. Ph is high, around 7.8, but I tested the water I purchased the fish in and the LFS' Ph, like my tap water, is also rather high.
 

JenC

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I had this happen with my newest batch of fish, that one was isolating and acting off. It turns out she had some nasty parasites. Have you noticed anything odd with their poop (long, stringy, red worms protruding from the anal vent), any spots or marks on their scales (a magnifying glass is helpful to examine them up close), shrunken or protruding stomachs, or flashing behavior?
 

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