GymnarchidaeFreshwater Fishadvanced
Gymnarchus niloticus 'Aba-Aba Knifefish'
Gymnarchus niloticus
Origin: Nile basin, West Africa
G
Water Parameters
Temperature22–28 °C
15 °C35 °C
pH6.5–7.5
49
GH (Hardness)4–15 °dGH
0 °dGH30 °dGH
KH (Alkalinity)2–8 °dKH
0 °dKH20 °dKH
Quick Stats
- Max Size
- 160 cm
- Min Tank
- 1500 L
- Lifespan
- 25+
- Swimming Level
- middle
- Schooling
- No
- Diet
- carnivore
- Temperament
- very aggressive; species-only essential
About
Gymnarchus niloticus, the Aba-Aba or African Knifefish, is a remarkable fish that swims using only undulating dorsal fin movements — no caudal fin. Uses weak electric pulses for electrolocation. Grows very large (1.6 m in wild). Requires species-only setup.
Care Guide
Very large aquarium 1500 L+ for adult. Temperature 22–28°C, pH 6.5–7.5. Species-only — highly territorial and aggressive. Feed large pellets, earthworms, fish fillets. Very long-lived.
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