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

Jump to next section Cat-eLog Data Sheet
Scientific NameCorydoras duplicareus  Sands, 1995
Common Name(s)
Type LocalityRio Poranga, 8 km north of the Nobua oba, prior to where it joins a small trib. of the upper Negro R., Brazil.
PronunciationKory DOOR ass - DOOP lee KARR ee uss
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. This specific epithet literally means from two(di=two) rivers(fluviatalis=from the river).
Jump to next section Species Information
Size 55mm or 2.2" 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.

According to the description C. duplicareus has serrations on the posterior edge of the pectoral fin spine, whereas C. adolfoi does not. This of course is not easy to see in a normal aquarium. The best way to see if your fish have these serrations would be to place them into a shallow, preferably white, container and shine a light up from underneath. Then with the aid of a magnifying glass you should be able to see if there are any serrations or not. As a general rule C. duplicareus tends to be a little stockier than C. adolfoi and the black band is usually a little broader.
SexingFemales fuller (when viewed from above) and larger.
Jump to next section Habitat Information
DistributionSouth America: Brazil: upper Rio Negro
Amazon, Middle Amazon (Solimoes), Negro, Upper Negro (click on these areas to find other species found there)
Show it on a map (Click the map-icon to show/hide map of species distribution)
pH6.4 - 7.4
Temperature20.0-24.0°C or 68-75.2°F (Show species within this range)
Other ParametersWater should be a little soft.
Jump to next section Husbandry Information
FeedingSinking wafers, frozen blood worms, Brine Shrimp and live black worms if available.
FurnitureSubstrate of fine gravel or sand. Open areas of substrate surrounded by plants or rocks / bogwood.
CompatibilityA peaceful fish exhibiting typical Corydoras behavior.
Suggested TankmatesCompatible with mid-water swimming fish such as neon or cardinal tetras or other South American Characins.
BreedingCorydoras duplicareus spawned at a temperature of 74°F (23°C) and a pH of 7.0. 30 to 40 eggs scattered primarily across the water line, in fact some of the eggs were out of the water all together. The eggs 1.8mm in size are cream in color.Eggs hatched in 5 days. In subsequent spawnings some eggs were deposited on plants as well. Fry initially fed newly hatched baby brine shrimp. Sinking pellets after a few weeks.
Jump to next section Further Information
ReferencesFreshwater Mar. Aquar.v. 18 (no. 7) - pp12 - Fig. 6
Registered Keepers(1) Jools, (2) Oliver D., (3) soltarii007, (4) Coryman, (5) Barracuda518 (k: 5), (6) philtre, (7) nettaigyo, (8) apistomaster (k: 2), (9) AmLi (k: 15), (10) NEONCORY (k: 21), (11) fulvioander (k: 3), (12) jollysue (k: 6), (13) thelivelylady, (14) cloudies, (15) smithrc, (16) kenneth knutsen, (17) Gry (k: 8), (18) bevans (k: 19), who also notes: "12/11/08-I have successfully raised 15 of the spawn. Most of them are still under 1". They seem to grow very slowly for me. Spawned on 2/27/08. 40-50 eggs. Added a couple of juveniles on 3/21/08. I was hoping at least one was adolfoi, but I think they're both dupis.", (19) Troender (k: 7), (20) gismo5001, (21) amergim, (22) Lubbe, (23) hoplo (k: 3), (24) Kampfer, (25) ranmasan, (26) lstratton, (27) thejudgement (k: 3), (28) polardbear (k: 31), (29) fjack88 (p: 2), (30) tcmfish (k: 4), who also notes: "Started with six and two died mysteriously.", (31) stanchung, (32) ucdxmisty, (33) ouscazz (k: 2), (34) markhinch, (35) cory777 (k: 3), (36) Ironhead (k: 55), who also notes: "75 liter aquaria, white sand and red flint creek gravel mix substrate, RO water with oak/almond leaves. Green yarn mops or java moss perfered vspawning sites. Fry left with adults until 12mm then moved to grow out tanks. Food: black worms, white worms,Sera tablets and Vipagran Baby. during 2012 approximately 640 fry raised to 26mm (26 retained for future breeders) remainder dispersed.", (37) percyplec (k: 6), (38) corybreed, (39) jp11biod, (40) coryla (k: 300), (41) Korsaaven (k: 33), who also notes: "Spawning group. Have spawned approximately 8 times the past year. Each spawn yields at least 20 fry.", (42) Mark Roesner, (43) arapaimag (k: 5), (44) coelacanth, (45) KansasGuppyGuy (k: 20), who also notes: "Frequent spawners.", (46) ars (k: 20), who also notes: "Regular spawners", (47) CATMANdrew (k: 4), (48) Mata Negra (p: 2, k: 12), (49) backstreetgambler (k: 8), (50) anthonyking, (51) mds, (52) tjudy, (53) progopvv, (54) gforcefx, (55) seliel (k: 8), (56) donpetty (k: 6), (57) Ronja, (58) mikey, (59) Vess, (60) seba089 (k: 7), (61) catfanatic, (62) timipi (k: 10), (63) matti2uude (k: 6), (64) corsairF4U (k: 16), (65) dvdrew, (66) darr3ll, (67) Paul (k: 16), (68) Jass, (69) crazyjock (k: 5), (70) duxallinarow, (71) Rebel00357 (k: 10), (72) BooUrns!, (73) Lee Meadows, (74) Supercorygirl (k: 4), (75) Ozboy (k: 20), (76) Gerard Pennards (k: 9), (77) TuCanSam, (78) plecokim, (79) Ingvald Arne Meland, (80) LostYeti (k: 2), (81) Marine590622, (82) mark24, (83) dkshadowwolf (k: 6), (84) ahxw, (85) sushi1980, (86) Zulan, (87) cjerrom, (88) Håvard Thomlevold, (89) Tamcon83 (k: 6), (90) benma (k: 4), (91) Waldharjaz (k: 3), (92) MChambers (k: 11), (93) Gerald CapeTown, (94) Carl Dutton (k: 6), (95) ktmman_8, (96) francoisMtl (k: 5), (97) Mvinyl (k: 13), (98) DavidNMaddieHaveCats, (99) rmc (k: 14), (100) Cory Ben, (101) Steven Jansen 72, (102) Jesnil72 (k: 18), (103) GeirO, (104) t195 (k: 12), (105) fishfarmer (k: 44), (106) bekateen (k: 7), (107) 4evercories (p: 2, k: 7), (108) Piotr, (109) cory-ap2, (110) Medievalmum, (111) Mexnotex.

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Breeding Reports(1) rmc (b: 49), (2) bekateen (b: 49), (3) corsairF4U (b: 42), (4) donpetty (b: 38), (5) Paul (b: 37), (6) Zulan (b: 34), (7) ars (b: 30), (8) backstreetgambler (b: 27), (9) Jesnil72 (b: 24), (10) Marine590622 (b: 13), (11) Mvinyl (b: 13), (12) Tamcon83 (b: 13), (13) Ironhead (b: 10), (14) MChambers (b: 8).
Article - Shane's World Reproduction Breeding Corydoras duplicareus
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Last Update2011 Aug 20 04:46 (species record created: 2001 Apr 20 00:00)