Meet the Brown Knife Fish, a smooth-moving night owl with a knack for turning every cave and shadow into an adventure. Xenomystus nigri is a fascinating choice for a spacious, thoughtfully arranged aquarium. Keep tankmates too large to be swallowed, and give this shy, mostly nocturnal fish plenty of places to retreat.
Care guide:
• Maximum size: about 12 inches
• Aquarium: 55 gallons or larger, with a secure lid
• Temperature: 73–82°F
• Setup: subdued lighting, gentle water flow, and caves or other hiding places
• Tankmates: choose peaceful fish that are too large to fit in its mouth
• Feeding: offer a varied, meaty diet suitable for carnivorous fish
Care guide:
• Maximum size: about 12 inches
• Aquarium: 55 gallons or larger, with a secure lid
• Temperature: 73–82°F
• Setup: subdued lighting, gentle water flow, and caves or other hiding places
• Tankmates: choose peaceful fish that are too large to fit in its mouth
• Feeding: offer a varied, meaty diet suitable for carnivorous fish