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Elephant-trunk Mormyrid

Campylomormyrus elephas

A bizarre, long-snouted electric fish from the Congo with serious personality.

Elephant-trunk Mormyrid
AI-generated illustration
© Google Gemini 2.5 Flash Image · AI-generated

About

The elephant-trunk mormyrid (Campylomormyrus elephas) is one of those fish that stops people cold the first time they see it. That dramatically elongated, downward-curving snout, shaped something like a curved trunk, is not just for show. Like other mormyrids, this species generates weak electrical fields to navigate murky water and locate the invertebrates it hunts along the substrate. In the wild it's found in the Congo River basin, primarily in the Democratic Republic of the Congo and Angola, where it probes soft riverbeds for worms and other small prey. In the aquarium it behaves as a dedicated carnivore, and getting it to accept prepared or frozen foods consistently is part of the challenge this species presents. It can reach a respectable size, so tank space matters, and its temperament toward its own kind is another consideration. These fish tend to be intolerant of conspecifics, so keeping multiples usually ends badly. This is genuinely a species for experienced keepers who can provide a well-maintained, softly lit setup with plenty of cover and a clean, stable environment. Get those conditions right and you'll have a genuinely fascinating, long-lived fish unlike almost anything else in freshwater.

Frequently asked questions

How big does the Elephant-trunk Mormyrid get?
The Elephant-trunk Mormyrid reaches about 6–15.5" as an adult.
What size tank does the Elephant-trunk Mormyrid need?
A minimum of 55 gallons is recommended for the Elephant-trunk Mormyrid.
What water parameters does the Elephant-trunk Mormyrid need?
The Elephant-trunk Mormyrid does best with a temperature of 68–84°F, a pH of 6–7.5, hardness around 5–20 dGH.
Is the Elephant-trunk Mormyrid aggressive?
The Elephant-trunk Mormyrid is aggressive and is best kept alone or with robust tankmates that can hold their own.
What does the Elephant-trunk Mormyrid eat?
The Elephant-trunk Mormyrid is a carnivore. It needs a meaty, protein-rich diet of frozen or live foods.
How long does the Elephant-trunk Mormyrid live?
With good care, the Elephant-trunk Mormyrid typically lives 5-10 years.