Strange Angel Behaviour

[stef_uk]

Hi

My mate has a 190l tank with an angel in it that he's had for about 3 years.

I noticed the other day that it was swimming upside down,i told him and he said it has been doing it for ages and also swims with its head pointing to the surface as well.
Apparently it only does it when he turns the lights off in the tank,as soon as the lights are back on its swimming normally again.He said that hes never had any problems with it and its never had any kind of illness.

I thought it might be looking for food on the surface..

Anyone have any ideas?

 

[DiscusKeeper403]

Shock of the lights being tunred off quickly?

 

[PoPoV]

Iv never heared of anything like that. I mean, iv heared of that behavior befor, but never only when the lights are off. Maybe you just have a uniqe fish?