? Black Ghost Knifefish Conservation status: Unknown
Scientific classification
Kingdom: Animalia Phylum: Chordata Class: Actinopterygii Order: Gymnotiformes Family: Apteronotidae Genus: Apteronotus Species: A. albifrons
Binomial name
Apteronotus albifrons (Linnaeus, 1766)

The Black Ghost Knifefish (Apteronotus albifrons) is a tropical fish belonging to the ghost knifefish family (Apteronotidae). They originate in South America in the Amazon Basin in Peru and from Venezuela through Paraguay in the Paraná Rivers. They are sometimes found in aquaria. The fish is all black except for two white rings on its tail. It moves mainly by undulating a long fin on its underside. It will grow to a maximum length of 20 inches (50 cm centimeters). The conservation status of a species is an indicator of the likelihood of that species continuing to survive. ... Image File history File links Black_Ghost_Knife_Fish_700. ... Scientific classification or biological classification is how biologists group and categorize extinct and living species of organisms (as opposed to folk taxonomy). ... Phyla Subregnum Parazoa Porifera (sponges) Subregnum Agnotozoa Placozoa (trichoplax) Orthonectida (orthonectids) Rhombozoa (dicyemids) Subregnum Eumetazoa Radiata (unranked) (radial symmetry) Ctenophora (comb jellies) Cnidaria (coral, jellyfish, anemones) Bilateria (unranked) (bilateral symmetry) Acoelomorpha (basal) Orthonectida (parasitic to flatworms, echinoderms, etc. ... Typical Classes Subphylum Urochordata - Tunicatas Ascidiacea Thaliacea Larvacea Subphylum Cephalochordata - Lancelets Subphylum Myxini - Hagfishes Subphylum Vertebrata - Vertebrates Petromyzontida - Lampreys Placodermi (extinct) Chondrichthyes - Cartilaginous fishes Acanthodii (extinct) Actinopterygii - Ray-finned fishes Actinistia - Coelacanths Dipnoi - Lungfishes Amphibia - Amphibians Reptilia - Reptiles Aves - Birds Mammalia - Mammals Chordates (phylum Chordata) include the vertebrates, together with... Orders See text The Actinopterygii are the ray-finned fish. ... Families Apteronotidae (ghost knifefishes) Eigenmanniidae (obsolete?) Gymnotidae (naked-back knifefishes and electric eels) Hypopomidae Rhamphichthyidae Sternopygidae The gymnotiforms are an order (Gymnotiformes) of knifefishes that have organs adapted to the exploitation of bioelectricity. ... The ghost knifefishes are a family (Apteronotidae) of knifefishes. ... In biology, binomial nomenclature is the formal method of naming species. ... Carolus Linnaeus Carl Linnaeus, also known after his ennoblement as , (May 23, 1707 – January 10, 1778), was a Swedish botanist, physician and zoologist[1] who laid the foundations for the modern scheme of nomenclature. ... 1766 was a common year starting on Wednesday (see link for calendar). ... Download high resolution version (400x626, 34 KB)Black Ghost Knifefish (Apteronotus albifrons). ... The tropics are the geographic region of the Earth centered on the equator and limited in latitude by the two tropics: the Tropic of Cancer in the north and the Tropic of Capricorn in the southern hemisphere. ... Atlantic herring, Clupea harengus: one of the most abundant species of fish in the world. ... The knifefishes (also knife fishes, notopterids or featherbacks) are ray-finned fish that are elongated in shape and whose fins run the length of the body, with the resulting appearance of a knife. ... In biological classification, family (Latin: familia, plural familiae) is 1) a rank or 2) a taxon in that rank. ... The ghost knifefishes are a family (Apteronotidae) of knifefishes. ... South America South America is a continent crossed by the equator, with most of its area in the Southern Hemisphere. ... The Amazon Basin is the part of South America drained by the Amazon River and its tributaries. ... The sun rising over the Paraná River, from the north-east of Rosario, Argentina. ... Aquarium is also the name of the Russian band, which is also spelled Akvarium A 335,000 gallon (1. ... Mid-19th century tool for converting between different standards of the inch An inch is an Imperial and U.S. customary unit of length. ... The metre, or meter (symbol: m) is the SI base unit of length. ...

The Black Ghost Knifefish natively lives in fast moving, sandy bottom creeks in a tropical climate. They prefer water with a 6.0 - 8.0 pH, a water hardness of 5.0 - 19.0 dGH, and a temperature range of 73-82 F (23-28 C). They are nocturnal, but they are weakly electric fish and use an electric organ and receptors distributed over the length of their body in order to find insect larvae. The tropics are the geographic region of the Earth centered on the equator and limited in latitude by the two tropics: the Tropic of Cancer in the north and the Tropic of Capricorn in the southern hemisphere. ... The correct title of this article is pH. The initial letter is capitalized due to technical restrictions. ... The title given to this article is incorrect due to technical limitations. ... Fahrenheit is a temperature scale named after the German physicist Gabriel Fahrenheit (1686–1736), who proposed it in 1724. ... A degree Celsius (°C) is a unit of temperature named after the Swedish astronomer Anders Celsius (1701-1744), who first proposed a similar system in 1742. ... TABEL OF ALL KNOWN ELEKTRIC FISHES WITHIN FRESHWATER HABITATS (= all known electric bony fishes): In salt water there is only one order, the Torpediniformes (electric rays), inside the chondrichthyes that shows species generating even strong electric pulses (genus Torpedo spp. ...

Due to their electrical charge, a close, contained group of knife fish (as in an aquarium) will line up side by side.

See also

• List of freshwater aquarium fish species

A vast number of species of fish have been successfully kept in the home aquarium. ...

References

• Barbus tetrazona (TSN 163328). Integrated Taxonomic Information System. Accessed on 12 November 2004.
• Puntius tetrazona. FishBase. Ed. Ranier Froese and Daniel Pauly. September 2004 version. N.p.: FishBase, 2004.