They are reading - Melville, perhaps - under lamps lighted by electric fish.
They cannot generate electric fields though, and are therefore not classified as electric fish.
In total, there are 348 known species of electric fish, in about 56 genera.
His laboratory has extensively studied the behavior of weakly electric fish.
They are also unique among electric fish in not possessing specialized electroreceptors.
To help them see, they are a weakly electric fish.
There's even a collection of electric fish flapping their fins on the cluttered stage.
A quantitative analysis of passive electrolocation behavior in electric fish.
The most lethal of all electric fish has solved this problem by stepping up the voltage.
Typically this organ is located in the tail of the electric fish.