Experienced adult Ghost Knife Fish These nocturnal fish grow significant, reaching all around twenty inches (51 cm), they need a large aquarium with space to maneuver. You’ll normally locate them during the shops as juveniles only 4 inches, so in that situation you have time to update the tank dimension https://aquariumaccessories.family.blog/2024/03/20/how-to-maintain-a-small-fish-tank/