Papyrocranus afer

"Gold Spotted Knife"

$40.00

Please note that the fish shown in the photo is not the exact fish you will receive and is only a representative of what an adult specimen will look like.

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Description

The gold spotted knifefish (Papyrocranus afer) is a species of freshwater fish in the family Notopteridae, found in tropical West Africa. It occurs in the Niger basin and other coastal river basins including the Tano River and Pra River basins in Ghana, and the Cross River and Sanaga River basins to the east of the Niger Delta. It reaches a maximum length of 31 inches.

Besides breathing in the normal way through its gills, the reticulated knifefish is able to breathe air at the surface of the water. For this purpose the swim bladder acts as a lung; it is an elongated structure that extends for the length of the body cavity and has finger-like side projections. This adaptation allows the fish to live in swamps where the water would otherwise be too low in oxygen content. The swim bladder can also be used to create sounds.

The reticulated knifefish is among a small group of teleost fish to be electroreceptive; although sensitive to electric charges, the fish does not possess an electric organ but uses this ability to locate objects in its vicinity, to detect prey and avoid predators.

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