An electric fish is a fish that can make electric fields. Many fish (sharks, rays, and catfish) can detect electric fields: they are 'electroreceptive'. They cannot make electric fields, and are not called electric fish.
An electric fish is a fish that can make electric fields. Many fish (sharks, rays, and catfish) can detect electric fields: they are 'electroreceptive'. They cannot make electric fields, and are not called electric fish.