Bony tongues (Osteoglossiformes)

The Bony tongues (Osteoglossiformes) order has 51 species in the Guppies.za.net fish encyclopedia, 30 of which are kept in home aquariums.

Families

• Bonytongues (Arapaimidae) 2 species, 2 aquarium
• Abas (Gymnarchidae) 1 species
• Mooneyes (Hiodontidae) 2 species
• Elephantfishes (Mormyridae) 30 species, 13 aquarium
• Featherbacks or knifefishes (Notopteridae) 8 species, 7 aquarium
• Arowanas (Osteoglossidae) 7 species, 7 aquarium
• Freshwater Butterflyfish (Pantodontidae) 1 species, 1 aquarium