Originally Posted by DeFeKt
No, a BGK's instinct is to hide, hardly a good example.
But the act of going into the tube may be a big leap. The second step is coming out the other end. The fish can't easily turn around and go out the same way that it entered so it must exit on the opposite end. Does the rate at which it enters and exits the tube determine how smart it is?
I have also heard that BGK's can be hand fed after teaching them and that they may actually let you hold them in the water if they feel safe enough. This seems to be showing the two extremes of the same type of fish. On one hand they love to hide and on the other they can be "trusting" enough to let someone hold them.