iOscar
Scientific classification
Kingdom: Animalia Phylum: Chordata Class: Actinopterygii Order: Perciformes Family: Cichlidae Genus: Astronotus Species: A. ocellatus
Binomial name
Astronotus ocellatus Agassiz, 1831

The oscar (Astronotus ocellatus) is a large species of cichlid, native to rivers in Venezuela, and along the east coast of South America, down to Paraguay, and typically reaches a maximum size of 38–45 cm (15–18 in). Image File history File linksMetadata Download high resolution version (973x904, 62 KB) Summary Dis Pic is made by Wiki-User J C D. Free to use fore all. ... Scientific classification or biological classification is how biologists group and categorize extinct and living species of organisms. ... Phyla Subregnum Parazoa Porifera Subregnum Eumetazoa Placozoa Orthonectida Rhombozoa Radiata (unranked) Ctenophora Cnidaria Bilateria (unranked) Acoelomorpha Myxozoa Superphylum Deuterostomia Chordata Hemichordata Echinodermata Chaetognatha Xenoturbellida Superphylum Ecdysozoa Kinorhyncha Loricifera Priapulida Nematoda Nematomorpha Onychophora Tardigrada Arthropoda Superphylum Platyzoa Platyhelminthes Gastrotricha Rotifera Acanthocephala Gnathostomulida Micrognathozoa Cycliophora Superphylum Lophotrochozoa Sipuncula Nemertea Phoronida Ectoprocta Bryozoa... {{{subdivision_ranks}}} See below Chordates (phylum Chordata) are a group of animals that includes the vertebrates, together with several closely related invertebrates. ... 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. ... Astronotus Swainson, 1839 Astronotus is genus of fish from the family Cichlidae. ... In biology, binomial nomenclature is the formal method of naming species. ... Louis Agassiz Jean Louis Rodolphe Agassiz (May 28, 1807-December 14, 1873) was a Swiss-born American zoologist, glaciologist, and geologist, the husband of educator Elizabeth Cabot Cary Agassiz, and one of the first world-class American scientists. ... Leopold I 1831 (MDCCCXXXI) was a common year starting on Saturday (see link for calendar). ... Genera Cichlids (pronounced “sick-lids”) are fishes from the family Cichlidae in the order Perciformes. ... South America South America is a continent crossed by the equator, with most of its area in the Southern Hemisphere. ... A centimetre (American spelling centimeter, symbol cm) is a unit of length that is equal to one hundredth of a metre, the current SI base unit of length. ... Mid-19th century tool for converting between different standards of the inch An inch is an Imperial and U.S. customary unit of length. ...

In the aquarium

Due to their size, they are often kept by aquarists with other larger New World cichlids. The fish comes in a wide variety of colors and patterns such as Tiger, Black, Albino, Zebra, Red and Fire Red. For other uses, see Aquarium (disambiguation). ... Carte dAmérique, Guillaume Delisle, c. ...

Oscars move with a slow, majestic appearance, but they can be quite destructive to their surroundings, as they tend to uproot plants, and move other objects in their tanks. They are a very peaceful fish among others of similar size, but will eat anything small enough to fit in their mouths, and can quite easily be trained to eat from their owner's hand. Oscars will frequently fight vigorously with each other, which leads to much chasing and splashing, although they typically do not hurt each other. Oscars are best kept in a 55-75 gallon tank with a medium textured substrate. It is also recommended to place oscars only with larger fish since they have been known to eat smaller fish that are introduced into their environment. An intelligent fish, if the oscar is raised with a set of fish, it will tend to leave them alone, but will attack newly introduced fish, even if they are of a similar size and species, as ones already there. Divisions Green algae Chlorophyta Charophyta Land plants (embryophytes) Non-vascular plants (bryophytes) Marchantiophyta - liverworts Anthocerotophyta - hornworts Bryophyta - mosses Vascular plants (tracheophytes) †Rhyniophyta - rhyniophytes †Zosterophyllophyta - zosterophylls Lycopodiophyta - clubmosses †Trimerophytophyta - trimerophytes Equisetophyta - horsetails Pteridophyta - true ferns Psilotophyta - whisk ferns Ophioglossophyta - adderstongues Seed plants (spermatophytes) †Pteridospermatophyta - seed ferns Pinophyta - conifers Cycadophyta - cycads Ginkgophyta...

Oscars are popular as pets, as they are interesting fish with personalities and surprising intelligence. Some larger oscars occasionally enjoy a gentle rub from their owner. Oscars recognize the person who feed them and some times, "dance," in joy when their meal is served. They will also "play" with toys, like a handful of rocks. Deep gravel will sometimes be avoided in oscar tanks, as thick layers can make keeping the tank clean difficult. Oscars like to dig, which can stir waste that has settled in and on the gravel layer, making the water in the tank very cloudy. But oscars can be given a handful of rocks to play with and twirl around, and rearrange. This is especially true for single oscars, whose only companion is its owner. While its owner is away from it, oscars can also play with a mirror to entertain itself. The oscar will challenge the mirror or socialize with it. But if the oscar excessively charges the mirror or tries to attack it, it might be best if the mirror was removed so the oscar doesn't injure itself. Pets and humans often contribute toward the happiness of the other in a pet relationship. ...

A photo of a varied strain of the fish, a long-finned Oscar