Catfish of the Month Right Arrow April 1998 • Article © Julian Dignall, uploaded April 01, 1998

Fairy Catfish, Panzerwels (Germany) - Corydoras atropersonatus   Weitzman & Nijssen, 1970

There is sometimes debate over the true identity of the fish pictured here, C. atropersonatus because it is similar to C. sychri. However it has a rounded snout and larger eyes. These features are present in the fish above, but there is no colouration at all in the dorsal fin which would indicate that the fish is C. sychri. I>C. atropersonatus should have 4 or 5 black spots in its dorsal fin. Because of the snout, the most obvious difference, I have labelled the fish accordingly."

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Jump to next section Cat-eLog Data Sheet
Scientific NameCorydoras atropersonatus  Weitzman & Nijssen, 1970
Common NamesFairy Catfish
Panzerwels (Germany)
Type LocalityRío Conambo at mouth of R. Shione, Río Tigre system, Ecuador, about 2°00'S, 76°30'W.
PronunciationKory DOOR ass - at row person ATT 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. Latin ater = black, personatus = masked.
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.

Corydoras atropersonatus is similar in colour pattern to C. sychri. C. sychri is a larger fish, has a pointed snout and has more, finer spots.
SexingFemale is fuller (when viewed from above) and larger.
Jump to next section Habitat Information
DistributionSouth America: Ecuador: East Pastaza state, Rio Tigre system & Peru: Loreto State, Rio Nanay
Amazon, Upper Amazon, Tigre (click on these areas to find other species found there)
Amazon, Upper Amazon, Tigre, Conambo (click on these areas to find other species found there)
Amazon, Upper Amazon, Nanay (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)
pH5.6 - 7.0
Temperature21.0-24.0°C or 69.8-75.2°F (Show species within this range)
Jump to next section Husbandry Information
FeedingSinking catfish pellets and bloodworm.
FurnitureNeeds a rounded substrate or sand. This species is prone to barbel loss at the hands of inept water management / inappropriate substrate.
CompatibilityPeaceful, keep in groups of 6 or more.
Suggested TankmatesMost small community fish. Tetras are ideal.
BreedingBreeding tank size = 450 x 200 x 150mm. Water Temp. =76 deg F. Ph =7.2 GH = 6 spawning. Followed the typical ''T'' formation two days after a water change which reduced the temp. by 6deg F. A total of 80 1,5mm diameter eggs were laid between three and five at a time. The eggs were all deposited on the tank sides. The adults were removed when they were observed eating more eggs than they were laying. Once the adults were removed a 50% dose of anti fungal solution was added to prevent infertile eggs from contaminating the fertile ones. 60% of the eggs proved fertile and the fry started to emerge on the fourth day after the eggs were laid, and in a further two days the fry were free swimming and were given their first feeding which consisted of pre-soaked powdered flake food followed by freshly hatched brine shrimp the following day. The fry grew at the following rates. At 7 days = 4mm. At 14 days = 6,3mm. At 1 month = 8,5mm. At 2 months = 13mm Adult colouration was reached in 10 weeks, and in 3months they were 21mm long. 49 fry reached adulthood.
Jump to next section Further Information
ReferencesBeaufortiav. 18 (no. 233) - pp123 - Figs. 2, 6b
Registered Keepers(1) Yan, (2) Tuti, (3) Daragh, (4) submarinr, (5) Birger Amundsen, (6) AmLi (k: 12), (7) thelivelylady, (8) kenneth knutsen (k: 4), (9) Gry (k: 5), (10) Kampfer (k: 2), (11) gem400, (12) Chlngr (k: 2), (13) dwblackman, (14) kim m (k: 7), who also notes: "Wild fish caught by a freind in Peru in 2005. Spawns often.", (15) vanillarum (k: 6), (16) janne dahle (k: 10), (17) dave.h, (18) wgtaylor (k: 7), (19) Mark Roesner, (20) MHS, (21) MChambers (k: 2), (22) mace, (23) mds (k: 6), (24) Vess, (25) gossei (k: 3), who also notes: "Wild caught by MAB 2011.", (26) KillieOrCory, (27) darr3ll, (28) bluefish1, (29) Regina (k: 7), (30) LivHeidiBraten, (31) Lee Meadows, (32) TKL, (33) kruseman, (34) Deb2703, (35) ahxw (p: 2), (36) syno321, (37) cjerrom, (38) Håvard Thomlevold, (39) Mvinyl (k: 7), (40) Neo (p: 2, k: 10), (41) Stuartbolton1, (42) homerno1 (k: 11), who also notes: "02-01-2017 lost 1, because it had jumped out of the tank and i didn't notice...", (43) Lars, (44) Junglejason, (45) jac (k: 9), (46) Mexnotex, (47) Mogl, (48) R.Akahane.

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Breeding Reports(1) MChambers (b: 8).
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Last Update2006 Mar 03 00:00 (species record created: 1998 Apr 01 11:22)

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