Ropefish ( Reedfish)
They are called ropefish or Reedfish and they are from West and Central Africa. They can survive in low oxygen level water since they have a pair of lungs as well as gills.
They can reach to 1′ size maximum. The Ropefishes are peaceful fishes and they enjoy other ropefish company. They move like snake at the bottom of the tank, you should equip the aquarium with gravel or sand substrate. You can feed them with live food such as insect larva, bloodwarms etc.