Gymnarchus niloticus

Gymnarchus niloticus is a large, nocturnal predator known for its electric field generation, which it uses for navigation and hunting in murky waters. It's a solitary and territorial fish, requiring ample tank space and hiding spots. Diet includes smaller fish, invertebrates, and occasionally plant matter. Its elongated body without pelvic or caudal fins gives it a distinctive knifefish appearance, making it a striking addition to large display aquariums.