It feeds mainly on bony fishes , ambushing them from the substrate during the day and actively hunting for them at night .
Solitary and nocturnal , the Pacific electric ray can generate up to 45 volts of electricity for the purposes of subduing prey or self - defense .
Pacific electric ray feeds mainly on bony fishes , ambushing them from the substrate during the day and actively hunting for them at night .
Solitary and nocturnal , the Pacific electric ray can generate up to 45 volts of electricity for the purposes of subduing prey or self - defense .