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Galaxy Rasbora pacing back and forth against glass?

2212 Views 7 Replies 7 Participants Last post by  shift, 
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I brought 5 rasbora and I'm pretty sure 2 are male and the rest female. I added them a day ago to a group of neon tetras and the females have fitted right in, shoaling with the tetras whereas the males are only seen just cruising back and forth. Could it be to do with the reflection of themselves?
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NWA-Planted

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#3 ·
As long as they aren't "flashing" or swimming at odd angles etc I wouldn't worry to much.

If you have Cory catfish you have probably seen them randomly rush the surface and break the surface... If not... Well it's funny and a little weird

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