Cat-eLog Right Arrow Callichthyidae Right Arrow Corydoradinae Right Arrow Corydoras

Jump to next section Cat-eLog Data Sheet
Scientific NameCorydoras polystictus  Regan, 1912
Common Name
Type LocalityUpper Rio Paraguay, Descalvados, 16°45'S, 57°40'W, Mato Grosso, Brazil.
Synonym(s)Corydoras virescens
PronunciationKory DOOR ass - pol ee STICK tuss
EtymologyCory = helmet, doras = skin. In this case it was incorrectly used to mean armour (cuirasse) instead of skin in allusion to the dual rows of plates that run along the flanks of this genus. From the Greek poly meaning many amd stiktos meaning spotted, alluding to the small spots on this species.
Jump to next section Species Information
Size 50mm or 2" SL. Find near, nearer or same sized spp.
IdentificationCorydoras are identified by their twin rows of armour plates along the flanks and by having fewer than 10 dorsal fin rays. They are most commonly confused with the other genera in the sub-family, namely Brochis, Scleromystax and Aspidoras.

This Corydoras has small spots all over its body, and a few on its dorsal fin. They also have pinkish bellies.
SexingFemales are larger and broader when viewed from above.
Jump to next section Habitat Information
DistributionSouth America: Brazil: Mato Grosso
La Plata, Paraná, Paraguay (click on these areas to find other species found there)
La Plata, Paraná, Uruga-í (click on these areas to find other species found there)
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pH6.0 - 7.6
Temperature20.0-25.0°C or 68-77°F (Show species within this range)
Jump to next section Husbandry Information
FeedingThis species will eat just about any food that sinks down to their level. Flake foods and sinking pellets/wafers make up a good staple diet, for these fish. Frozen and live foods are great as treats.
FurnitureHiding places in the form of caves, driftwood, and plants are appreciated. As these catfish sometimes cavort out in the open, open swimming space is necessary.
CompatibilityVery peaceful fish, and will never bother a tankmate. They are completely harmless.
Suggested TankmatesAvoid large or aggressive fish which are not good tankmates for any Corydoras. Small plecos, tetras and dwarf cichlids are good tankmates.
BreedingThis cory spawns the way most corys do. The pair will adopt the ''T'' position, and the female will gather eggs and sperm. Then, she swims to a flat, clean surface (usually the glass), and deposits the eggs. This is repeated numerous times.
Jump to next section Further Information
ReferencesAnn. Mag. Nat. Hist. (Ser. 8)v. 10 (no. 57) - pp216
Registered Keepers(1) Barracuda518 (k: 4), (2) fulvioander, (3) AmLi (k: 7), (4) Mark Roesner, (5) madmacaw, (6) donpetty, who also notes: "Purchased with a group of C. Similis. Seems to like to hangout with them over other corys in the same tank. Temp 76f, medium hard water.", (7) ladytara33, (8) LostYeti, (9) rmc, (10) CharlieM9, (11) MarlonnekeW (k: 10), (12) evojoey, (13) Junglejason, (14) Peixes, (15) Euan30003.

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Breeding Reports(1) CharlieM9 (b: 58).
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Last Update2011 Oct 05 12:15 (species record created: 2003 Mar 30 00:00)