The Green Terror (Aequidens rivulatus) is a colorful freshwater fish in the cichlid family. The fish originate on the pacific side of South America in the coastal waters from the Tumbes River in Peru to the Esmeraldas River in Ecuador. They reach lengths of 20.0 cm (8 in). 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 (rhombozoans) 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... This article is in need of attention. ... Orders See text The Actinopterygii are the ray-finned fish. ... Families many, see text The Perciformes, also called the Percomorphi or Acanthopteri, include about 40% of all fish and are the largest order of vertebrates. ... Genera Apistogramma - Dwarf Cichlids Astronotus (Oscars) Boulengerochromis Cichlasoma - American Ciclids Crenicichla Pterophyllum - Freshwater Angelfish Symphysodon - Discus Teleogramma Tilapia Cichlids are a family of perciform fishes. ... In biology, binomial nomenclature is the formal method of naming species. ... Albrecht Carl Ludwig Gotthilf Günther. ... 1860 is the leap year starting on Sunday. ... For the village on the Isle of Wight, see Freshwater, Isle of Wight. ... Atlantic herring, Clupea harengus: one of the most abundant species of fish in the world. ... Genera Acaronia Aequidens Alcolapia Alticorpus Amphilophus Apistogramma- Dwarf Cichlids Archocentrus Aristochromis Astronotus(Oscars) Aulonocara Baileychromis Bathybates Benitochromis Boulengerochromis Buccochromis Cichlasoma Crenicichla Geophagus Hemichromis Heros Julidochromis Maylandia Parachromis Pseudotropheus Pterophyllum- Freshwater Angelfish RhamphochromisSymphysodon- Discus Teleogramma Thorichthys Tilapia A Cichlid (pronounced “sick-lid”) is a fish of the family Cichlidae in the... Scientific classification or biological classification refers to how biologists group and categorize extinct and living species of organisms. ... The Pacific Ocean (from the Latin name Mare Pacificum, peaceful sea, bestowed upon it by the Portuguese explorer Ferdinand Magellan) is the worlds largest body of water. ... South America South America is a continent crossed by the equator, with most of its area in the Southern Hemisphere. ... The Tumbes River, called Puyango River in Ecuador, is a river in South America. ... The Esmeraldas River is a river in northwestern Ecuador that flows into the Pacific Ocean. ... This article is being considered for deletion in accordance with Wikipedias deletion policy. ... Mid-19th century tool for converting between different standards of the inch An inch is an Imperial and U.S. customary unit of length. ...

As the name implies this species can be very aggressive, especially adult specimens. This is not guaranteed, however, and peaceful individuals are often observed. Juvenile Green Terrors are often sold in pet shops for the aquarium hobby, as well as fish similar enough to be mistaken for this species (including the Blue Acara). For other uses, see Aquarium (disambiguation). ...

The fish is somewhat deep-bodied with a prominent head. Adult males develop a pronounced forehead hump, a common cichlid trait. Juveniles are tan colored with silver-blue flecks and lack the bright iridescent blue, green, and orange coloration and long, flowing fins of adult specimens. The iridescence of the Blue Morpho butterfly wings. ...

Green Terror Cichlids natively live in a tropical climate and prefer water with a 6.5 - 8.0 pH, a water hardness of 25.0 dGH, and a temperature range of 20 - 24 °C (79 - 86 °F). 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. ... 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. ... Fahrenheit is a temperature scale named after the German physicist Gabriel Fahrenheit (1686–1736), who proposed it in 1724. ...

See also

• List of freshwater aquarium fish species

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

References

• Aequidens rivulatus (TSN 169839). Integrated Taxonomic Information System. Accessed on June 22, 2005.
• "Aequidens rivulatus". FishBase. Ed. Ranier Froese and Daniel Pauly. May 2005 version. N.p.: FishBase, 2005.

The Integrated Taxonomic Information System (ITIS) is a partnership designed to provide consistent and reliable information on the taxonomy of biological species. ... June 22 is the 173rd day of the year (174th in leap years) in the Gregorian Calendar, with 192 days remaining. ... 2005 (MMV) was a common year starting on Saturday of the Gregorian calendar. ... FishBase is a comprehensive database of information about fish. ...

External links

• CichlidMadness.com Cichlid Madness, Aequidens Rivulatus Cichlid Profile.
• AmericanCichlids.Com - Green Terror Profile