Re: Do goldfish recognise their own reflection?

>He is probably looking at the big old world out there. From inside the
>tank there won't be a reflection unless you stick a mirror up.

Actually, if there is an aquarium light and the room outside is darker than
the tank the fish will see a mirror-like reflection.  Just like when you try
to look through a window from inside your house at nighttime.  If the light
is on in the room the only thing you see in the window is a blury reflection
unless you stick your nose right on the glass.

Supposedly a way to trick an aggressive fish into leaving other fish alone
is to put a mirror on the outside of the tank.  So the fish gets preoccupied
with its "rival" in the mirror and leaves other fish in the tank alone.  I
doubt fish are smart enough to recognize a reflection as their own image.
They will think its another fish.

E.Otter