thankyou for your replies and also editors comments we do need a bit of humour i suppose definitely here in earthquake city however this is a problem that is not really funny to me as it is not good i dont think to have fish behaving like they are on a race track and bashing themselves against the glass the angels i am talking about are in a bare tank as i am trying to get them to breed and the suggestion re reflection i will certainly look at thankyou it does make some sense heres hoping something will now work and they will settle down