Stressed Minnow - post power outage

[StellaStars]

Hey all,

I had a power outage this morning. Not sure how long it lasted. I was only awake for about an hour of it, but if the time my clock snapped back to is to be believed, it could have been 4-5 hours.

I have two gold white cloud minnows and four green rasbora in a 5G.

One of the minnows is hanging out at the top of the tank and not moving much. The other fish are all active and normal.

I suppose this could be stress from the outage? Is there anything I can do to help?

 

[Nils]

Seems like oxygen deficiency to me. Make water movement or add an airstone to oxygenate the water.

 

[ImACoolguy]

Seems like oxygen deficiency to me. Make water movement or add an airstone to oxygenate the water.

But it's only 1 fish... Me thinks it's sick


Caleb

 

[StellaStars]

But it's only 1 fish... Me thinks it's sick


Caleb

So you think the outage is a coincidence?

It's still hanging out by the top of the water and not moving much.

Anything I can do?

 

[ImACoolguy]

So you think the outage is a coincidence?

It's still hanging out by the top of the water and not moving much.

Anything I can do?

See if you can see any physical abnormalities


Caleb

 

[StellaStars]

See if you can see any physical abnormalities


Caleb

No visible injuries, spots, etc.

It's opening and closing it's mouth rapidly, but not right at the surface of the water. It's hanging an inch or two down.

Just tested the ammonia and it's at 0

 

[jlbfish]

I have no idea if it will help but maybe add some surface agitation? Could the water need to be more oxygenated? Otherwise I would agree with a sick fishy.

 

[ImACoolguy]

It might just be nervous. Who know what happened when the power was out.


Caleb

 

[Brookster123]

Is the tank cycled? Even a few hours of stagnation will stress.the inhabitants in a small tank with too many fish. Ammonia builds up,.oxygen depletes.. parameters???

Sent from my SAMSUNG-SM-G900A using Aquarium Advice mobile app

 

[StellaStars]

Is the tank cycled? Even a few hours of stagnation will stress.the inhabitants in a small tank with too many fish. Ammonia builds up,.oxygen depletes.. parameters???

Sent from my SAMSUNG-SM-G900A using Aquarium Advice mobile app

Yup, it's a cycled tank. All the other fish are doing great. Tested ammonia and it was at 0.

 

[Nils]

But it's only 1 fish... Me thinks it's sick


Caleb

Yeah this is kind of weird. Just a guess, but I have no idea about sick fish. Better leave the pro's to this one.

 

[jlbfish]

Did you only test ammonia or did you test other parameters as well? I know a PH spike can cause some weird behavior.

Did you test Nitrites?
Symptoms of Nitrite spike are:
Fish gasp for breath at the water surface
Fish hang near water outlets
Fish is listless
Tan or brown gills
Rapid gill movement

 

[StellaStars]

Just tested, the other params seem normal. I may take a sample to the LFS tomorrow for a second opinion.

The minnow passed away.

But all the other fish are still acting totally normal, so my guess is the water is okay.

Thanks for the advice and help. I'd still like to know what went wrong so I can prevent it from happening again.