Why do fish roll/top?
Some fish are more prone to roll/top on the surface than others, especially early morning or at dusk. Carp, Bream, Roach, Tench, Barbel and Salmon are all the usual suspects. I've also watched the goldfish in my garden pond roll on the suface and then dive down releasing air bubbles as they go.
I don't know if any scientific research has been conducted into this strange behaviour.
Does anybody have any theories as to why fish do this?
One thing I do know, is that a rolling fish is usually a feeding fish.
Some fish are more prone to roll/top on the surface than others, especially early morning or at dusk. Carp, Bream, Roach, Tench, Barbel and Salmon are all the usual suspects. I've also watched the goldfish in my garden pond roll on the suface and then dive down releasing air bubbles as they go.
I don't know if any scientific research has been conducted into this strange behaviour.
Does anybody have any theories as to why fish do this?
One thing I do know, is that a rolling fish is usually a feeding fish.