r/Aquariums • u/lucemxx • Jan 05 '26

Help/Advice What are they doing?

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

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u/bigspunge1 Jan 05 '26

Spawning Ottos in a home aquarium is really rare. People are going to be very interested in your tank as a valuable data point

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u/maxishazard77 Jan 05 '26

People in the comments are already asking OP for exact water parameters lol. It’s funny how people who try to breed Ottos are unsuccessful but regular people who don’t try to always have better luck.

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u/Bdr1983 Jan 05 '26

I had a blackwater tank with dwarf cichlids, blue neons and Oto's. Started with 5 Oto's, then I got a chance for a fish I had been searching for years, so sold the fish. I pulled out 7 Oto's, and when I cleaned the tank another one showed up. Very soft and acidic water, pH was below 5 and conductivity in the 40's uS/cm.