G. niloticus is nocturnal and has a poor vision. Instead, it navigates and hunts smaller fish using a weak electric field, as demonstrated by the zoologist Hans Lissmann in 1950, when he noticed that it could swim equally well forwards or backwards, clearly relying on a sense other than vision. This opened up research into electroreception and electrogenesis in fish.
G. niloticus is a nocturnal fish with poor vision. It navigates and hunts smaller fish using an electric field, as demonstrated by zoologist Hans Lissmann's observations in 1950. This led to research into electroreception and electrogenesis in fish.