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In my 30litre tank I have:
3 lambchop ras.'s
2 glolights tet.'s
2 serpae tet.'s

I noticed today, and I've seen them doing it before, but my fish are all swimming up into the bubbles coming down from the biowheel filter and swimming in big loops up into it.
They have had a stressful day as i moved them from a tank in one room to the same tank but moved into another room and they seem to do this at stressful times, but is it something else?
Their colours are bright and the water is clear, the plants are thriving, but they are swimming around quite quickly and spending lots of time with their reflections on the glass.
Has anyone else noticed this behaviour? Is it just natural exploration or stress or do they just enjoy the bubbles?
I'm quite new to fishkeeping, so would love any advice or help. Thanks for your time, rae x


never let your drunken friends name your fish, brb, just got to feed "DeathWhore3000" and "Raphael McShizzle".

I'll throw my hat into the ring and say that they are stressed.

This is because I see that behaviour in rummynose tetras when I introduce them to my tank.

The swimming with their reflection makes me think they are at least partially stressed from such small numbers. Schooling fish like all of the above prefer large groups. The minimum usually quoted to keep them from getting stressed is 6 of each species. Serpaes are also known to be rather nippy and may be picking on the other fish.

Thanks you two
The guy at my lfs said i'd be fine with a few of each, so I took his advice but I'll try and find find someone locally who will take in my lone fish and get more of just the one type. I might go back to the shop and make them take them back.
Thanks anyway you guys, i thought it would be that,
Rae xx

never let your drunken friends name your fish, brb, just got to feed "DeathWhore3000" and "Raphael McShizzle".