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This website is dedicated to Ol'Conrad.  He passed away shortly after Christmas, 2013.  He had made stupendous contributions to our hobby through his dedicated and careful breeding of aquatic animals.  He was a good friend and best buddy of Pete's and will not only be missed greatly by Pete, the hobby will forever have lost a valuable friend and asset. But his progeny will live on forever in his memory.
This is an alphabetically ordered list of Corydoras species, as of 2007. It was pointed out that this is a very old list. it is, but call me weird cause I think it is fascinating to read the progress of Corydoras in the tropical fish trade.

Each entry includes: binomial scientific name, ichthyologist discoverer and year of publication.

Some entries are indicated with existing common name and synonyms. Some recently-described or -identified specimens are labelled with a C-number (see References section for detailed information). extinct species are marked with the symbol †.

 List of Corydoras species

  C. acrensis. Nijssen, 1972. Common name: acre corydoras.

  C. acutus. ope, 1872. Common name: blacktop corydoras.

  C. adolfoi. Burgess, 1982. Common name: Adolfo's catfish.

  C. aeneus. Gill, 1858. Common name: bronze corydoras. Synonyms: Hoplosoma aeneum, C. microps, C. venezuelanus, C. macrosteus and C. schultzei.

  C. agassizii. Steindachner, 1877. Common name: spotted corydoras.

  C. albolineatus (C056). Knaack, 2004.

  C. amandajanea. Sands, 1995.

  C. amapaensis. Nijssen, 1972.

  C. ambiacus. Cope, 1872. Common name: spotted corydoras.

  C. amphibelus. Cope, 1872.

  C. approuaguensis. Nijssen & Isbrücker, 1983.

  C. araguaiaensis. Sands, 1990.

  C. arcuatus (C020). Elwin, 1939. Common name: skunk corydoras.

  C. areio (C070). Knaack, 2000.

  C. armatus. Günther, 1868.

  C. atropersonatus. Weitzman & Nijssen, 1970.

  C. aurofrenatus. Eigenmann & Kennedy, 1903.

  C. axelrodi. Rössel, 1962. Common name: pink corydoras.

  C. baderi. Geisler, 1969. Synonym: C. oelemariensis.

  C. bicolor. Nijssen & Isbrücker, 1967.

  C. bifasciatus. Nijssen, 1972.

  C. bilineatus. Knaack, 2002.

  C. blochi (C032). Nijssen, 1971. Common name: spotback corydoras.

  C. boehlkei. Nijssen & Isbrücker, 1982.

  C. boesemani. Nijssen & Isbrücker, 1967.

  C. bondi (C031). Gosline, 1940. Common name: blackstripe corydoras.

  C. breei. Isbrücker & Nijssen, 1992.

  C. brevirostris. Fraser-Brunner, 1947. Synonym: C. melanistius brevirostris.

  C. britskii. Nijssen & Isbrücker, 1983.

  C. burgessi. Axelrod, 1987.

  C. carlae. Nijssen & Isbrücker, 1983.

  C. caudimaculatus. Rössel, 1961. Common name: tailspot corydoras.

  C. cervinus. Rössel, 1962.

  C. cochui (C022). Myers & Weitzman, 1954. Common name: barredtail corydoras.

  C. concolor. Weitzman, 1961. Common name: concolor corydoras.

  C. condiscipulus. Nijssen & Isbrücker, 1980.

  C. copei. Nijssen & Isbrücker, 1986.

  C. coppenamensis. Nijssen, 1970. Synonym: C. bondi coppenamensis.

  C. coriatae. Burgess, 1997.

  C. crimmeni. Grant, 1997.

  C. cruziensis (C012). Knaack, 2002.

  C. crypticus. Sands, 1995.

  C. davidsandsi. Black, 1987. Common name: Sand's corydoras.

  C. delphax. Nijssen & Isbrücker, 1983.

  C. difluviatilis. Britto & Castro, 2002.

  C. diphyes. Axenrot & Kullander, 2003.

  C. duplicareus. Sands, 1995. Common name: duplicate corydoras.

  C. ehrhardti. Steindachner, 1910. Synonym: C. meridionalis.

  C. elegans. Steindachner, 1877. Common name: elegant corydoras. Synonym: C. pestai.

  C. ellisae. Gosline, 1940.

  C. ephippifer. Nijssen, 1972.

  C. eques. Steindachner, 1877.

  C. esperanzae. Castro, 1987.

  C. evelynae. Rössel, 1963.

  C. filamentosus. Nijssen & Isbrücker, 1983.

  C. flaveolus. Ihering, 1911.

  C. fowleri. Böhlke, 1950.

  C. garbei. Ihering, 1911.

  C. geoffroy. La Cèpéde, 1803. Synonym: C. octocirrus.

  C. geryi. Nijssen & Isbrücker, 1983. Synonym: C. bolivianus.

  C. gomezi. Castro, 1986.

  C. gossei. Nijssen, 1972.

  C. gracilis. Nijssen & Isbrücker, 1976.

  C. griseus. Holly, 1940. Synonym: C. griseus de weyeri.

  C. guapore. Knaack, 1961. Common name: guapore corydoras.

  C. guianensis. Nijssen, 1970.

  C. habrosus. Weitzman, 1960. Common name: salt and pepper catfish.

  C. haraldschultzi. Knaack, 1962. Common name: mosaic corydoras.

  C. hastatus. Eigenmann & Eigenmann, 1888. Common name: dwarf corydoras. Synonym: C. australe.

  C. heteromorphus. Nijssen, 1970.

  C. imitator. Nijssen & Isbrücker, 1983. Common name: imitator corydoras.

  C. incolicana (C001). Burgess, 1993.

  C. isbrueckeri (C050). Knaack, 2004.

  C. julii. Steindachner, 1906. Common name: leopard corydoras.

  C. kanei (C026, C046). Grant, 1997.

  C. lacerdai. Hieronimus, 1995.

  C. lamberti. Nijssen & Isbrücker, 1986.

  C. laserline. Common name: orange laserline corydora.

  C. latus. Pearson, 1924.

  C. leopardus. Myers, 1933. Synonym: C. funnelli.

  C. leucomelas. Eigenmann & Allen, 1942. Common name: false spotted catfish. Synonym: C. caquetae.

  C. longipinnis. Knaack[1], 2007.

  C. loretoensis. Nijssen & Isbrücker, 1986.

  C. loxozonus (C079, C082, C083). Nijssen & Isbrücker, 1983.

  C. maculifer (C069). Nijssen & Isbrücker, 1971. Common name: dotted corydoras.

  C. mamore (C011). Knaack, 2002.

  C. melanistius. Regan, 1912. Common name: bluespotted corydoras. Synonym: C. wotroi.

  C. melanotaenia. Regan, 1912. Common name: green gold catfish.

  C. melini. Lönnberg & Rendahl, 1930. Common name: bandit corydoras.

  C. metae. Eigenmann, 1914. Common name: masked corydoras.

  C. micracanthus. Regan, 1912.

  C. multimaculatus (C059). Steindachner, 1907.

  C. multiradiatus. Orcés, 1960.

  C. nanus. Nijssen & Isbrücker, 1967. Common name: little corydoras.

  C. napoensis. Nijssen & Isbrücker, 1986.

  C. narcissus. Nijssen & Isbrücker, 1980.

  C. nattereri. Steindachner, 1877. Common name: blue corydoras. Synonyms: C. juquiaae and C. nattereri triseriatus.

  C. negro. naack, 2004.

  C. nijsseni (C111). Sands, 1989. Common name: Nijssen's corydoras. Synonym: C. elegans nijsseni.

  C. noelkempffi (C058). Knaack, 2004.

  C. oiapoquensis. Nijssen, 1972.

  C. ornatus. Nijssen & Isbrücker, 1976.

  C. orphnopterus. Weitzman & Nijssen, 1970.

  C. ortegai.

  C. osteocarus (C060). Böhlke, 1951.

  C. ourastigma. Nijssen, 1972.

  C. oxyrhynchus. Nijssen & Isbrücker, 1967.

  C. paleatus. Jenyns, 1842. Common name: peppered corydoras. Synonyms: C. maculatus, C. marmoratus, C. microcephalus, Silurus quadricostatus and Silurus 7-radiatus.

  C. panda. Nijssen & Isbrücker, 1971. Common name: panda corydoras.

  C. pantanalensis (C005). Knaack, 2001.

  C. paragua. Knaack, 2004.

  C. parallelus (C002). Burgess, 1993.

  C. pastazensis. Weitzman, 1963. Common name: pastaza corydoras. Synonym: C. pastazensis orcesi.

  C. paucerna. Knaack, 2004.

  C. pinheiroi (C025). Dinkelmeyer, 1995.

  C. polystictus. Regan, 1912. Synonym: C. virescens.

  C. potaroensis. Myers, 1927.

  C. pulcher. Isbrücker & Nijssen, 1973.

  C. punctatus. Bloch, 1974.

  C. pygmaeus. Knaack, 1966. Common name: pygmy corydoras.

  C. rabauti. La Monte, 1941. Common name: Rabaut's corydoras. Synonym: C. myersi.

  C. reticulatus. Fraser-Brunner, 1938. Common name: reticulated corydoras.

  C. revelatus †. Cockerell, 1925.

  C. reynoldsi. Myers & Weitzman, 1960.

  C. robineae. Burgess, 1983. Common name: bannertail corydoras.

  C. robustus. Nijssen & Isbrücker, 1980.

  C. sanchesi. Nijssen & Isbrücker, 1967.

  C. saramaccensis. Nijssen, 1970.

  C. sarareensis (C023). Dinkelmeyer, 1995.

  C. schwartzi. Rössel, 1963. Common name: Schwartz's catfish.

  C. semiaquilus. Weitzman, 1964.

  C. septentrionalis. Gosline, 1940. Synonym: C. cortesi.

  C. serratus. Sands, 1995.

  C. seussi (C027). Dinkelmeyer, 1996.

  C. similis. Hieronimus, 1991.

  C. simulatus. Weitzman & Nijssen, 1970.

  C. sipaliwini. Hoedeman, 1965.

  C. sodalis. Nijssen & Isbrücker, 1986. Common name: false network catfish.

  C. solox. Nijssen & Isbrücker, 1983.

  C. spectabilis. Knaack, 1999.

  C. spilurus. Norman, 1926.

  C. splendens. Castelnau, 1855. Synonyms: Callichthys splendens, Callichthys taiosh, Brochis coeruleus, Brochis dipterus, C. semiscutatus, Chaenothorax bicarinatus and Chaenothorax eigenmanni.

  C. steindachneri. Isbrücker & Nijssen, 1973.

  C. stenocephalus (C017). Eigenmann & Allen, 1942.

  C. sterbai. Knaack, 1962. Common name: Sterba's corydoras.

  C. surinamensis. Nijssen, 1970.

  C. sychri. Weitzman, 1960. Common name: Sychr's catfish.

  C. treitlii. Steindachner, 1906.

  C. trilineatus. Cope, 1872. Common name: threestripe corydoras. Synonyms: C. episcopi, C. dubius.

  C. tukano (C064). Britto & Lima, 2003.

  C. undulatus. Regan, 1912.

  C. virginiae (C004). Burgess, 1993. Common name: Miguelito corydoras.

  C. vittatus. Nijssen, 1972. Synonym: C. blochi vittatus.

  C. weizmani. Nijssen, 1971. Common name: twosaddle corydoras.

  C. xinguensis (C055, C105, C106, C107, C108). Nijssen, 1972. Common name: xingu corydoras.

  C. zygatus. Eigenmann & Allen, 1942.
Ol' Conrads Longfin Gold Aeneus Corys
The Corydoras genus is well known among aquarists for its many ornamental species They are well suited to tropical freshwater community aquariums, as they get along well with other species and are not at all aggressive. 

Some types of Corydoras are quite timid and are recommended to be kept in shoals of three upwards. Corys are mostly bottom feeders, so they should be offered sinking pellets as well as supplements of live and frozen foods. If flake foods are used, care should be taken to prevent all food from being eaten by faster moving fish at the higher levels of the tank.

Most corys  tolerate a wide range of water conditions, including temperatures that are cooler than tropical. 

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. They are more likely to thrive if there is an open area of substrate on the bottom of the tank where they can obtain submerged food.
  Albino Aeneus  and eggs, notice she laid her eggs on the side of the tank glass.
Albino Aeneus 
Green Aeneus 
Corydoras Metae
Corydoras Habrosus
  F0 Young adult Corydoras melini

This is a nice group of wild caught Corydoras melini Ol'Lotsoffish has hanging around my fish room.his is a nice group of wild caught Corydoras melini I have hanging around my fish room.

FO means wild caught,  F1 is first generation in someone's tank, F2  the second and so on.

Why go anywhere
"He brings out that 10 year old kid in me who had
An aquarium in the house with what I now know what was a siren in it.
The tub in the basement had a baby alligator in it
The backyard swimming pool, tubs, garbage cans at different times had Carp, bluegills, bullheads, turtles, frogs, salamanders, snakes, lizards ..
Since I cant go back to being 10 and move to New York ..
Hey Mang! Show me them Darters you got!!"