Actually, my fish are not cichlids, they are local wild fish.

I've got two tanks that are fully cycled with ammonia and nitrites
safely under control. Nitrates are also within acceptable range.
Besides the water being a little hard and some variations on
alkalinity, everything is pretty well within range.

But while my fish look great, and behave and eat normally, I still
see them occasionally flashing against decorations and sometimes
doing some sort of shaking motion.

I was just wondering if there is something else wrong with the water,
or perhaps it is normal for this to happen from time to time with
fish that are kept in an aquarium.

Jonathan

First, most local wild caught bass, bluegill, sunfish, are all cichlids...
just so you'll know.. Not sure what you have, but since they _ARE_ wild
caught, they could have any possible pathogen allowed in nature....

I'd probably be curious to what water parameters they are used to... I'd get
a local water sample and check it out, compare it to your water and see
what's what....

Could be the nitrates that you think is ok... if you don't have plants, it's
not ok.... acceptable range for you or acceptable range for them?

Post your water parameters and let some gurus break them down... not me,
I"m still learning....

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is that better??