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-   -   Big increase in kuhli loach activity - are they OK? (http://www.tropicalfishkeeping.com/cyprinids-atherinids/big-increase-kuhli-loach-activity-they-100407/)

magpie 05-03-2012 12:39 PM

Big increase in kuhli loach activity - are they OK?
 
Hey there,

After my weekly water change last week, I added some of these soft fuzzy reddish plants (can't recall the name). I also re-homed a male laetacara araguaiae, sadly - he and his mate were spawning every few weeks, which is wonderful, but they were chasing everyone too much. It seemed too stressful for the rest of the community, even though they weren't doing any damage. Just seemed like a constant low-level of stress for everyone else. In addition, my brazilian pennywort, floating, had really taken off from a recent major pruning and was providing a nice cover for everyone, which all of my fish like.

So, all good changes. For the first few days after these changes, the kuhlis were out and about during the day more, which always makes me happy. They love hanging on these fuzzy plants. But for the past 3, maybe 4 days, they have all been doing their spazzy swimming dance pretty much non-stop. I know that when it happens here and there it can indicate happy kuhlis, or a potential storm coming in. But this is a group of them all together, and all the time - I've not seen it to this extent before, so want to be sure they're OK.

Has anyone else experienced this? We have been having rain, but this is Oregon. That's fairly normal, though spring time tends to be more volatile weather-wise, so maybe it just is barometric changes?

Everyone else seems fine. I'm due for another water change today and I'll check the water but last week it was all fine and normal.

Here's a video.

jaysee 05-03-2012 01:00 PM

I've noticed a dramatic increase in my kuhli activity in the last few days. It just comes and goes like that, though. Water changes always brings them out.

thekoimaiden 05-03-2012 01:20 PM

Mine always get uppity before a storm or just when the barometric pressure changes. I've actually got a barometer right next to the tank. It's really neat to see the correlation. I can always tell when a storm is coming because the kuhlis swim around like crazy, the goldfish start chasing each other, and all my betta blow bubble nests. I would just chock it up to the volatile weather. And your tank is gorgeous!

magpie 05-03-2012 01:31 PM

OK, thanks. They do this on occasion, but this is just more than I've seen. Possibly because during the winters here the weather is pretty steadily rainy. ;) Now that it's spring things change much more rapidly and are more on an up and down basis.

A barometer would be an interesting experiment!

Does anyone know why they do this, scientifically-speaking? Are they happy or does the pressure bother them? I can't fully make logical sense of it.

thekoimaiden 05-03-2012 01:43 PM

Well generally, low pressure means rain is moving into the area which typically signals the end of the dry season. This sets off mating behavior in a lot of fish because a bigger "pond" means there is enough room and food to have offspring. So to fish, low pressure = baby makin' time. ;-)

magpie 05-03-2012 01:50 PM

Ah, ha - so they are showing off to each other, then.

My husband narrates their dancing. It goes something like this:

"WHEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEE!
Ok, hold on, gonna rest on this leaf for a second. OK!
WHEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE EEEEEEE!"

;)


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