A few if my fish just went crazy...

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kageh124

Jack Dempsey
MFK Member
Mar 14, 2012
468
2
33
MD, DC Area
So, after I turned on my aquarium light this morning (keep in mind, it was still dark around 6am) I noticed that one of my oscars started swimming out of control. He ended up bumping into the aquarium glass a couple of times and I felt like he had enough speed to literally jump like shamu. So, he stopped... And it pretty much looked like he was half way unconscious... Then, I noticed one of my other oscars was about to do something extremely similar.... And then my convict... I have about 6 other fish in the tank and they seemed fine (granted, it was 6am and the lights turned on... So everythig seemed normal in that situation) and now, a couple of hours later they seem to be ok? Shortly after that behavior, I added some water conditioner and stress zyme to the tank but I can't seen to figure out what happened? I've kept fish on and off for about 10 years now and this is the first time I've noticed this.

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Check your water parameters...could have been an ammonia/nitrate spike. Or they could have been spooked by the light. Just my 2 cents....
 
I'll check the water this afternoon... I'm just hoping it was them being spooked by the light. I normally switch on the light, then leave and do my daily prep for work. This time though I hung out for a minute.

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Also, what would cause an ammonia or nitrate spike? I did a 15% water change yesterday like I do every week and I was hanging out in the fish room most of the evening and I didn't notice anything out of the ordinary.

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i would say they just freaked because of the light being turned on when it was dark. my fish do that if the room is dark and i turn the light on.
 
Alot depends on the size of your tank and current stocking...
 
That's a little comforting... At the time I was thinking it might have been like mass killing or something.

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