Brown ghost knifefish

Species of fish

The brown ghost knifefish is a species of weakly electric knifefish in the family Apteronotidae. Only the brown ghost knifefish, a vertebrate, has been proven to have negligible brain aging thus far. They are a hardy species that eats tiny fish, crustaceans, and insect larvae in the nature, but in an aquarium, they often take to frozen foods rather quickly.

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