Funny you should post this as recently my harlequins are acting crazy, when I feed them 1 or 2 of them zip up to the food and then crash back down into the substrate and lie upside down for like 5 minutes as if their dead! It's weird!
I think i need to stop feeding flakes as 80% of it gets left uneaten and i dont feed alot either it just gets stuck in branches and the redmoor. I like this idea though might give something like this ago!
Bob, do you know where Bolton Aquatics is, its called something else now the link is here http://www.britains-aquatic.co.uk/ i got my ottos from here ring them and see if they have any in stock. cheers
Just removed some water from my tank for a water change, before i readded water back in my fish were at the top looking for air.
I also added in a new diffuser, i dont think this would have caused the problem?
Anyway i readded the 10ltrs back into the tank with the correct dose of tap...