Hello,
So I have a question about the nocturnal behavior of Zebra Danios. It seems every time I leave them with all the lights out (as in all the lights in the room, not just the tank lights) for any significant length of time, I turn on the lights to find most of them swimming at the surface. Of course, this always freaks me out because I assume they are gasping for air, which it appears they're not. Usually once the rooms lights are on for a minute or two they start swimming around the tank again and don't go back to the surface.
I have plenty of aeration and good surface agitation, so I don't think O2 is an issue. My tank is cycling and I've been getting some NitrIte readings, but I've been on top of the WC and prime, but it has me concerned that that could be an issue. But it only seems to happen when the lights are off, and then quickly stops once they're on.
Is this normal behavior? I guess it could be a normal nocturnal instinct, but curious if anybody with more experience could let me know what's up.
So I have a question about the nocturnal behavior of Zebra Danios. It seems every time I leave them with all the lights out (as in all the lights in the room, not just the tank lights) for any significant length of time, I turn on the lights to find most of them swimming at the surface. Of course, this always freaks me out because I assume they are gasping for air, which it appears they're not. Usually once the rooms lights are on for a minute or two they start swimming around the tank again and don't go back to the surface.
I have plenty of aeration and good surface agitation, so I don't think O2 is an issue. My tank is cycling and I've been getting some NitrIte readings, but I've been on top of the WC and prime, but it has me concerned that that could be an issue. But it only seems to happen when the lights are off, and then quickly stops once they're on.
Is this normal behavior? I guess it could be a normal nocturnal instinct, but curious if anybody with more experience could let me know what's up.