Catches of Mormyrus rume exceeding 30 cm are exceptionally rare, although reports suggest specimens up to 100 cm exist. The species' size is well-documented due to its common use as a food fish in its natural habitat. A study conducted by Fawole in 2002 focused on the natural history of M. rume in Lekki Lagoon, Nigeria. Over the course of a year (December 1999 to November 2000), he examined 225 specimens, revealing a size range from 13 cm to 23 cm. Surprisingly, sexually ripe females were found year-round from 13.5 cm standard length onwards, indicating continuous reproduction. The gut content of these fish was intriguing, including plant material. In aquariums, mormyrids, like M. rume, are commonly fed carnivorous fish food, with bloodworms being particularly suitable. Despite lacking vibrant colors, Mormyrus rume is a fascinating species with unique characteristics. Their communication relies on electric impulses, and their relatively large brain, compared to body mass, contributes to their intriguing behavior. Proper aquarium care involves a heavily furnished, spacious tank, where these fish thrive best when kept alone or in larger groups, as smaller groups may exhibit prolonged quarrels. Observing Mormyrus rume can evoke thoughts of dolphins, as their facial features surprisingly resemble this well-known marine mammal.