Skip to product information
1 of 1

Rob's Aquatics Fish Shop

14” Aba Aba Knife Fish

14” Aba Aba Knife Fish

Regular price $225.00
Regular price $400.00 Sale price $225.00
Sale Sold out
Shipping calculated at checkout.

⚔️ Aba Aba Knife Fish (14”) – The Ultimate Power Predator for Monster Tanks

If you're looking for a highly intelligent, powerful, and aggressive predator, the Aba Aba Knife Fish (Gymnarchus niloticus) is in a class of its own. Native to the Nile River and West Africa, this 14-inch specimen is already a formidable force in the aquarium—built like a torpedo, packed with muscle, and known for its electroreceptive hunting abilities.

Unlike other knife fish, the Aba Aba is not shy or peaceful—it’s an apex predator that thrives in massive solo displays or with very carefully selected tank mates. Its metallic sheen, fluid movement, and shark-like presence make it one of the most jaw-dropping species available to advanced keepers.


🐟 Species Profile:

  • Scientific Name: Gymnarchus niloticus

  • Common Name: Aba Aba Knife Fish

  • Size: 14 inches (can reach 40+ inches in captivity)

  • Temperament: Highly aggressive, solitary predator

  • Tank Size: 300+ gallons (minimum)

  • Water Parameters: 76–82°F | pH 6.5–7.5 | Moderate flow, clean water

  • Diet: Carnivore – thrives on tilapia, shrimp, worms, and carnivore pellets


⚠️ Care Notes:

The Aba Aba is not for community tanks and should only be kept by experienced aquarists with:

  • A dedicated predator tank with ample swim space

  • Thick glass or acrylic (they hit hard!)

  • A tight-fitting lid – powerful jumpers

Tank mates are generally not recommended, but if attempted, must be:

  • Extremely robust, fast, and equally large (and even then, risk is high)

This fish is hyper-aware, often recognizing its owner and displaying curiosity. It's one of the only knife fish species that does not have an anal fin—instead, it moves via powerful undulations of its dorsal fin, creating an eerie, snake-like swim pattern.


🛒 Why Buy from RobsAquatics.com?

Each 14” Aba Aba Knife Fish is:

  • Fully quarantined and eating frozen/prepared foods

  • Carefully shipped with our Live Arrival Guarantee

  • ✅ A true centerpiece predator for public displays or monster fish collectors


📦 Extremely limited availability – this is one of the most aggressive and fascinating predators in the aquarium hobby. Secure your Aba Aba Knife Fish now—only at RobsAquatics.com.

View full details