Fantails at the top of the tank
#1
Hi all,
Just wondered if anyone can shed some light on this for me - my 2 fantails have always spent a fair amount of time at the top of the tank.
Since I've moved them to their 125 litre home, their behaviour is still the same. They do come down to rummage in the gravel & nibble the plants, but how do I tell if they're just chasing the current at the surface thinking it's food, or if there's a lack of oxygen?
I have the filter outlet pipe positioned just above the water line pointing downwards, which creates a good amount of movement for aeration & surface agitation, therefore I see no need to use an air pump. There is more than adequate surface movement.
I sometimes see my female fantail maybe looks a bit 'floaty', which suggests she's swallowing air. Thay are both extremely active all the time, I've never seen them sitting still or clamping, apart from the day before my female drops eggs as she looks uncomfortable and sometimes floats in one corner, but other than that they're very healthy, great appetite etc.
Any ideas?