Mormyridaefreshwater fishadvanced

Elephant Nose Fish

Gnathonemus petersii

Also known as: Elephant Nose Fish, Peter's Elephant Nose

Origin: Central Africa (Congo basin, Nigeria)

E

Water Parameters

Temperature2328 °C
15 °C35 °C
pH67.5
49
GH (Hardness)212 °dGH
0 °dGH30 °dGH
KH (Alkalinity)18 °dKH
0 °dKH20 °dKH

Quick Stats

Max Size
25 cm
Min Tank
200 L
Lifespan
6-10
Swimming Level
bottom
Schooling
No
Diet
carnivore
Temperament
peaceful with other species; territorial towards own kind

About

Gnathonemus petersii is one of the most fascinating and intelligent freshwater fish available to hobbyists, generating and detecting weak electrical fields to navigate and communicate. It is a crepuscular and nocturnal species that forages for worms and small invertebrates using its elongated, highly sensitive rostrum. It requires a spacious, dim, well-planted aquarium and prefers the company of its own kind.

Care Guide

Water: 23–28°C, pH 6.0–7.5, soft to medium hardness. Tank: Minimum 200L; dimly lit, heavily planted with caves and driftwood; sand substrate. Feeding: Live or frozen bloodworm, tubifex, earthworm pieces, and small invertebrates; reluctant to take dry food. Behaviour: Weakly electric; communicates electrically; can be aggressive to its own species in small spaces. Compatibility: Best with peaceful, non-electric mid or upper water species; avoid Mormyrids in small tanks.

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