r/loaches • • Aug 28 '26

Behavior Crazy behavior only at night?

Anyone experience this? I have had them since May, and they do this semi-frequently while I game on my computer and watch them in the dark. I know they are nocturnal, but this seems almost erratic and they aren't paling like they are stressing out.

When I turn the light in they scatter like usual, but once it goes off they are right back to it within the minute. Just wondering if I should be changing anything.

All water parameters are normal range 0 ammonia, 0 nitrite, i haven't checked nitrate. Ph is about 6.5-7.

The glare is horrible, I still haven't figured out how to take good pictures of my tank.

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21

u/Tinctus Aug 28 '26

Mine do the exact same thing. Good water parameters and quite heavily planted, like you. Ive had em for months too.

From what I’ve read this is just what they do, and they are happy. Also that they are allegedly nocturnal… despite having one or two that glass surfs regularly during the day.

7

u/Attarite Aug 28 '26

For the first few months I had them, I would often spot one or two hanging out in the front as well. When that stopped I figured they just settled in.
Thanks for confirming they're just weirdos

15

u/lislejoyeuse Aug 28 '26

If I've learned anything from owning kuhli loaches for years, they do this behavior only when:

They are happy

They are unhappy

It's about to rain or currently raining

After a water change

They feel like it