False Tiger Knifefish - (Gymnotus javari)

🐟 False Tiger Knifefish (Gymnotus javari)

The False Tiger Knifefish is an elongated, nocturnal predator with striking barred patterns reminiscent of a tiger. Found in slow-moving waters of South America, it’s a secretive yet fascinating species best suited for experienced fishkeepers.

🔍 Quick Facts

• 🆔 Common Name: False Tiger Knifefish
• 🧬 Scientific Name: Gymnotus javari
• 🧬 Family: Gymnotidae
• 🌎 Origin: Amazon Basin, primarily Peru and Brazil
• 📏 Max Size: 30–40 cm (12–16 inches)

🕊️ Behavior & Temperament

• 🌙 Primarily nocturnal, hiding during the day and hunting at night
• 🐠 Can be territorial with other knifefish or similar-shaped species
• 🍽️ Carnivorous—feeds on live and frozen foods
• ⚠️ Best kept singly or with robust, non-aggressive tankmates

🏡 Tank Requirements

• 🛁 Minimum Tank Size: 55 gallons (75+ recommended for adults)
• 🪵 Provide caves, driftwood, and dense vegetation for hiding
• 💨 Moderate water flow with high oxygenation
• 🌑 Dim lighting to mimic natural environment

Water Parameters:

• 🌡️ Temperature: 24–28°C (75–82°F)
• ⚗️ pH: 6.0–7.5
• 💧 Soft to moderately hard water

📊 Overview Table

📝 Snippet

The False Tiger Knifefish (Gymnotus javari) is a striking nocturnal predator from the Amazon Basin. Its bold tiger-like bands and secretive behavior make it a captivating species for advanced fishkeepers with large, well-decorated tanks.