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Members of the South American Corydoras genus are freshwater temperate and tropical catfish in the armored catfish family (Corydoradinae subfamily), and are commonly referred to as cory catfish, cory cats, or simply corys. The Paleocene, early dawn of the recent, is a geologic epoch that lasted from 65. ...
Image File history File linksMetadata Size of this preview: 800 × 540 pixel Image in higher resolution (1600 × 1079 pixel, file size: 252 KB, MIME type: image/jpeg) Photo of Corydoras semiaquilus at the Vancouver Aquarium, taken July 2005 by User:Stan Shebs File links The following pages on the English...
Binomial name Corydoras semiaquilus Weitzman, 1964 Corydoras semiaquilus is a tropical freshwater fish belonging to the Corydoradinae sub-family of the Callichthyidae family. ...
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For other uses, see Animal (disambiguation). ...
Typical Classes Subphylum Urochordata - Tunicates 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 Akysidae Amblycipitidae Amphiliidae Ariidae Aspredinidae Astroblepidae Auchenipteridae Bagridae Callichthyidae Cetopsidae Chacidae Clariidae Claroteidae Cranoglanididae Diplomystidae Doradidae Hypophthalmidae Ictaluridae Loricariidae Malapteruridae Mochokidae Nematogenyidae Pangasiidae Parakysidae Pimelodidae Plotosidae Schilbeidae Scoloplacidae Siluridae Sisoridae Trichomycteridae Catfish (order Siluriformes) are a diverse group of fish. ...
Genera Aspidoras Brochis Callichthys Corydoras Dianema Hoplosternum Lepthoplosternum Megalechis Scleromystax The family Callichthyidae hails from South America and contains some of the most popular freshwater aquarium fish such as the corydoras. ...
Genera Aspidoras Brochis Corydoras The Corydoradinae is a sub-family of the Callichthyidae family, which contains some of the most popular freshwater aquarium fish, such as the Corydoras. ...
See also the disambiguation page Lacépède (disambiguation) de La Cépède Bernard Germain Étienne comte de La Ville-sur-Illon La Cépède (December 26, 1756 – October 6, 1825) was a French naturalist. ...
This is an alphabetically ordered list of Corydoras species, as of 2007. ...
This is an alphabetically ordered list of Corydoras species, as of 2007. ...
In biology, a type is that which fixes a name to a taxon. ...
Binomial name Corydoras geoffroy Lacepède, 1803 Corydoras geoffroy is a tropical freshwater fish belonging to the Corydoradinae sub-family of the Callichthyidae family. ...
In scientific nomenclature, synonyms are different scientific names used for a single taxon. ...
C. S. Rafinesque Constantine Samuel Rafinesque-Schmaltz (October 22, 1783-September 18, 1840) was a nineteenth-century polymath who led a chaotic life. ...
William Swainson William Swainson (October 8, 1789 - December 6, 1855), was an English ornithologist and artist. ...
Dr George S. Myers 1905-1985 spent most of his career at Stanford University, where he was one of the leading American Ichthyologists during the first half of the twentieth century. ...
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For the village on the Isle of Wight, see Freshwater, Isle of Wight. ...
For the usage in virology, see temperate (virology). ...
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. ...
This article is about the siluriform catfishes; for the Atlantic catfish, see Seawolf (fish); for other uses, see Catfish (disambiguation). ...
Genera Aspidoras Brochis Callichthys Corydoras Dianema Hoplosternum Lepthoplosternum Megalechis Scleromystax The family Callichthyidae hails from South America and contains some of the most popular freshwater aquarium fish such as the corydoras. ...
Genera Aspidoras Brochis Corydoras The Corydoradinae is a sub-family of the Callichthyidae family, which contains some of the most popular freshwater aquarium fish, such as the Corydoras. ...
Taxonomy
The name Corydoras is derived from the Greek kory (helmet) and doras (skin).[1] Corydoras is by far the largest genus of neotropical fishes with over 142 species.[2] In addition, many variants exist.[citation needed] It is the sole genus in the tribe Corydoradini.[3] C. difluviatilis is recognized as the basalmost species of Corydoradini, exhibiting several plesiomorphic features compared to the other species of Corydoras.[4][3] The type species for this genus is Corydoras geoffroy.[1] Several hundred Corydoras species are not yet classified, but kept by aquarists. These species are given C-Numbers, originally devised by Hans-Georg Evers for the German fishkeeping magazine DATZ in 1993. In 2006, there were 153 C-numbers assigned, of which 32 had been assigned appropriate scientific names. A biogeographic region, that extends from Mexico southwards to Tierra del Fuego, and also includes the Caribbean islands. ...
In phylogenetics, basal members of a group diverged earlier than a subgroup of others (or vice versa). ...
This cladogram shows the relationship among various insect groups. ...
A type species fixes the name of a genus (or of a taxon in a rank lower than genus). ...
Binomial name Corydoras geoffroy Lacepède, 1803 Corydoras geoffroy is a tropical freshwater fish belonging to the Corydoradinae sub-family of the Callichthyidae family. ...
“Aquaria†redirects here. ...
The C. barbatus, C. macropterus, and C. prionotos have been reclassified into the genus Scleromystax.[3] Brochis had been differentiated from Corydoras due to the higher number of dorsal fin rays; however, Brochis has been suggested to be a synonym of Corydoras.[3] However, this is hotly contested and has not be universally accepted, particularly on PlanetCatfish. The sixray corydoras belongs in Aspidoras.[citation needed] Type species Callichthys barbatus Quoy & Gaimard, 1824 Binomial name Scleromystax barbatus (Quoy & Gaimard, 1824) Scleromystax macropterus (Regan, 1913) Scleromystax prionotos (Nijssen & Isbrücker, 1980) Scleromystax salmacis Britto & Reis, 2005 Scleromystax is a genus of catfishes (order Siluriformes) of the family Callichthyidae. ...
Dorsal fin of an orca A dorsal fin is a fin located on the backs of fishes, whales, dolphins, and porpoises, as well as the (extinct) ichthyosaurs. ...
In scientific nomenclature, synonyms are different scientific names used for a single taxon. ...
Binomial name Aspidoras pauciradiatus (Weitzman & Nijssen, 1970) Synonyms Corydoras pauciradiatus Weitzman & Nijssen, 1970 The sixray corydoras (Aspidoras pauciradiatus) or false corydoras is a tropical freshwater fish belonging to the Corydoradinae sub-family of the Callichthyidae family. ...
Type Species Aspidoras rochai Ihering, 1907 Common Species Aspidoras fuscoguttatus Aspidoras lakoi Aspidoras pauciradiatus (sixray corydoras) Aspidoras rochai The Aspidoras genus is a moderately sized genus of freshwater catfish in the armored catfish family consisting of 19 species from Brazil and Peru. ...
Distribution The species of Corydoras usually have more restricted areas of endemism than other callichthyids, but the area of distribution of the entire genus almost equals the area of distribution of the family, except for Panama where Corydoras is not present.[5] Corydoras species are distributed east of the Andes to the Atlantic coast, from Trinidad to the La Plata River drainage in northern Argentina.[2] The genus is also widely distributed in South America from the Magdalena River basin, in Colombia, and occurs in a variety of environments.[4] This article is about the mountain system in South America. ...
The Atlantic Ocean is Earths second-largest ocean, covering approximately one_fifth of its surface. ...
For other uses, see Trinidad (disambiguation). ...
This page discusses the estuary. ...
Map of the Magdalena River watershed. ...
Description Species assigned to Corydoras display a broad diversity of body shapes and coloration.[4] Corydoras are small fish, ranging from 25 to 120 millimetres (1.0–4.7 in) SL.[2] A millimetre (American spelling: millimeter, symbol mm) is an SI unit of length that is equal to one thousandth of a metre. ...
An inch (plural: inches; symbol or abbreviation: in or, sometimes, ″ - a double prime) is the name of a unit of length in a number of different systems, including English units, Imperial units, and United States customary units. ...
Fish are commonly measured in several ways. ...
Ecology Corydoras are generally found in smaller-sized streams, along the margins of larger rivers, in marshes and ponds.[2] They are native to slow-moving and almost still (but seldom stagnant) streams and small rivers of South America where the water is shallow and very clear.[citation needed] Most species are bottom-dwellers, foraging in sand, gravel, or detritus.[2] The banks and sides of the streams are covered with a dense growth of plants, and this is where the corys are found. They inhabit a wide variety of water types but tend toward soft, neutral to slightly acidic or slightly alkaline pH and 5-10 degrees of hardness. They can tolerate only a small amount of salt (some species tolerate none at all) and do not inhabit environments with tidal influences.[citation needed] They are often seen in shoals.[2] Most species prefer being in groups and many species are found in schools or aggregations of hundreds or even thousands of individuals, usually of a single species, but occasionally with other species mixed in.[citation needed] Unlike most catfishes which are nocturnal, Corydoras species are active during the daytime.[2] South America South America is a continent crossed by the equator, with most of its area in the Southern Hemisphere. ...
For other uses, see PH (disambiguation). ...
The hardness of the water results in a calcification Hard water is water that has a high mineral content (contrast with soft water), usually consisting of calcium (Ca2+) and magnesium (Mg2+) ions, and possibly including other dissolved metals, bicarbonates, and sulfates. ...
Their main food is bottom-dwelling insects and insect larvae and various worms, as well as some vegetable matter. Although no corys are piscivorous, they will eat flesh from dead fishes. Their feeding method is to search the bottom with their sensory barbels and suck up food items with their mouth, often burying their snout up to their eyes, one of the reasons a soft sand substrate is preferable.
In several species of Corydoras, it has been observed that the fishes, after initial evasive reaction to threat, lay still; this is suggested to be a form of cryptic behavior. However, it is also argued that most species do not have cryptic coloration nor freezing behavior and continue to exist.[2] Crypsis is a phenomena where an organisms appearance allows it to blend well into its environment. ...
A few Otocinclus species (O. mimulus, O. flexilis, O. affinis, and O. xakriaba) are considered to be Batesian mimics of certain Corydoras species (C. diphyes, C. paleatus, C. nattereri, and C. garbei, respectively). These Corydoras species have bony plates of armor and strong spines as defenses, making them less palatable; by mimicking these species in size and coloration, Otocinclus avoid predation.[2] Species Otocinclus macrospilus Otocinclus (auto SINK luss) is a genus of the armored catfish family (Loricariidae). ...
A mimic is any species that has evolved to appear similar to another successful species in order to dupe predators into avoiding the mimic, or dupe prey into approaching the mimic. ...
Binomial name Corydoras paleatus Corydoras paleatus is a common variety of the Corydoras genus of catfish. ...
Binomial name Corydoras nattereri Steindachner, 1876 The blue corydoras or Natterers catfish, Corydoras nattereri, is a tropical freshwater fish belonging to the Corydoradinae sub-family of the Callichthyidae family. ...
A unique form of insemination has been described in Corydoras aeneus. When these fish reproduce, the male will present his abdomen to the female. The female will attach her mouth to the male's genital opening, creating the well-known "T-position" many Corydoras exhibit during courtship. The female will then drink the sperm. The sperm rapidly moves through her intestines and is discharged together with her eggs into a pouch formed by her pelvic fins. The female can then swim away and deposit the pouch somewhere else alone. Because the T-position is exhibited in other species than just C. aeneus, it is likely that this behavior is common in the genus.[6] Scientific Name: Corydoras aeneus Common Name: Bronze Cory Family: Callichthyidae Subfamily: Corydoradinae Class: Actinopterygii Synonyms: C. macrosteus, C. microps, Hoplosoma aeneum. ...
For other uses, see Sperm (disambiguation). ...
In the aquarium Corydoras are well known among aquarists for its many ornamental species.[7] They are well suited to tropical freshwater community aquariums, as they get along well with other species and are not at all aggressive. Corys are shy fish and it is recommended to keep them in groups of at least six as most species seem to form shoals in the aquaria (e.g. Paxton 1997). Corys are mostly bottom feeders, so they should be offered flake foods (which do sink), sinking pellets, and supplements of live and frozen foods, but care should be taken to prevent all the food from being eaten by the faster-moving fish at the higher levels of the tank. 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. ...
Most corys prefer soft, acidic water. However, they can tolerate a wide range of water conditions. They do not do well in fish tanks with high nitrate levels. This ion leads to the infection of the barbels, which will shorten and become useless. The barbels may also be affected by constant contact with a sharp substrate. These are easy fish to keep, being peaceful, small, hardy, active, and entertaining. Occasionally they will dart to the surface, sticking their snout above the water for an instant, appearing to take a "breath" of fresh air. This behavior is perfectly normal and is not an indication that anything is wrong with the fish. However, if done in excess, this behavior may indicate poor water conditions. Trinitrate redirects here. ...
This article is about fish. ...
The substrate of an aquarium refers to the material used on the tank bottom. ...
Where investigated Corydoras sp. have been shown to be diurnal and crepuscular rather than nocturnal and activity can even peak at twilight (Paxton 1997). Corydoras are very good choices for a community aquarium, and are widely kept throughout the world. Their longevity in the aquarium is noteworthy; C. aeneus is said to have lived 27 years in captivity and 20 years is not too uncommon. Adult Firefly or Lightning Bug – a Crepuscular Beetle Photuris lucicrescens Crepuscular is a term used to describe animals that are primarily active during the twilight. ...
References - ^ a b "Corydoras". FishBase. Ed. Ranier Froese and Daniel Pauly. March 2006 version. N.p.: FishBase, 2006.
- ^ a b c d e f g h i Axenrot, Thomas E.; Kullander, Sven O. (October 2003). "Corydoras diphyes (Siluriformes: Callichthyidae) and Otocinclus mimulus (Siluriformes: Loricariidae), two new species of catfishes from Paraguay, a case of mimetic association" (PDF). Ichthyol. Explor. Freshwaters 14 (3): 249-272.
- ^ a b c d Britto, Marcelo R. (December 2003). "Phylogeny of the subfamily Corydoradinae Hoedeman, 1952 (Siluriformes: Callichthyidae), with a definition of its genera" (PDF). Proceedings of the Academy of Natural Sciences of Philadelphia 153: 119–154.
- ^ a b c Britto, Marcelo R.; Castro, Ricardo M. C. (2002). "New Corydoradine Catfish (Siluriformes: Callichthyidae) from the Upper Paraná and São Francisco: The Sister Group of Brochis and Most of Corydoras Species". Copeia (4): 1006–1015.
- ^ Reis, Roberto E. (29 April 1996). Corydoras. Tree of Life Web Project. Retrieved on 2007-07-12.
- ^ Kohda, Masanori; Tanimura, Masayo; Kikue-Nakamura, Miyako; Yamagishi, Satoshi (1995). "Sperm drinking by female catfishes: a novel mode of insemination" (PDF). Environmental Biology of Fishes 42: 1-6. Kluwer Academic Publishers.
- ^ Huysentruyt, Frank; Adriaens, Dominique (2005). "Descriptive osteology of Corydoras aeneus (Siluriformes: Callichthyidae)" (PDF). Cybium 29 (3): 261-273.
- Evers, Hans-Georg. A system called “C-Numbers” (English). Retrieved on 2006-06-08. (needs free account)
- Burgess, W. E. (1987). A Complete Introduction to Corydoras and Related Catfishes. Neptune City, NJ: T.F.H. Publications. ISBN 0-86622-264-2.
- Paxton, CGM (1997) Shoaling and activity levels in Corydoras catfish (Siluriformes: Callichthyidae) Journal of Fish Biology 51, 496-502.
FishBase is a comprehensive database of information about fish. ...
PDF is an abbreviation with several meanings: Portable Document Format Post-doctoral fellowship Probability density function There also is an electronic design automation company named PDF Solutions. ...
PDF is an abbreviation with several meanings: Portable Document Format Post-doctoral fellowship Probability density function There also is an electronic design automation company named PDF Solutions. ...
Copeia is a quarterly published periodical pertaining to ichthyological and herpetological subjects. ...
Roberto Esser dos Reis, Brazilian D.Sc. ...
The Tree of Life Web Project is an ongoing Internet project and providing information about the diversity and phylogeny of life on Earth. ...
Year 2007 (MMVII) is the current year, a common year starting on Monday of the Gregorian calendar and the AD/CE era in the 21st century. ...
is the 193rd day of the year (194th in leap years) in the Gregorian calendar. ...
PDF is an abbreviation with several meanings: Portable Document Format Post-doctoral fellowship Probability density function There also is an electronic design automation company named PDF Solutions. ...
PDF is an abbreviation with several meanings: Portable Document Format Post-doctoral fellowship Probability density function There also is an electronic design automation company named PDF Solutions. ...
Year 2006 (MMVI) was a common year starting on Sunday of the Gregorian calendar. ...
is the 159th day of the year (160th in leap years) in the Gregorian calendar. ...
See also Wikimedia Commons has media related to: Corydoradinae Image File history File links Commons-logo. ...
A vast number of species of fish have been successfully kept in the home aquarium. ...
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