Question about a fishtank in my office cubical

In article , js1 wrote:
On 2005-01-13, Richard wrote:

Or Killifish. Or catfish or tetras or rasboras or pencilfish or,
um, anything thta makes sense for the tank size.


I thought those fish (aside from the cats) required water circulating
for oxygen. The constraint I'm reading from the original poster is
basically nothing that could cause any noise.

They require oxygen, but the water doesn't need to be circulating.

I'm staring at a one litre tank right now with 2 harlequins, 2 pencils and
a glowline rasbora and a bunch of baby crypts. No filter.

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