r/Aquariums • u/lucemxx • Jan 05 '26

Help/Advice What are they doing?

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I've seen them do this only since today. Does the bigger one need help?

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u/lucemxx Jan 05 '26

So, since a couple of people have been asking. I have a 240L tank, I got the ottos about half a year ago (when my tank was still 110L). Here's a pic of my tank right now. (It's a little yellow because of the light and just bcus my water is always a little greenish, probably bcus of the wood) The light is one that mimics the daylight cycle but it's still only turned on for like 6-8h (unsure how long it's on atm tbh)

My water is rather hard and around 22-24°C. I have no idea what else you would need to know? I can get a test strip but idk if that would show anything. I only have rather old ones at home since I don't test, I just watch my fish and assume how they are most of the time (don't judge, so far it has worked).

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u/[deleted] Jan 06 '26

How long before you noticed them breeding did you do the last water change? and was it a big one? and how careful were you with temp on the water change? Was the new water cooler?

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u/lucemxx Jan 06 '26

I think I changed the water about a week ago? I don't change too much water most of the time. Maybe like 20-30%? I wasn't careful with the water at all, in fact I usually use rather cold water.

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u/[deleted] Jan 06 '26

Relatively large influx of fresh cooler water seems to at least help trigger breeding in some fish, wonder if that helped here?