Article © Julian Dignall, uploaded April 01, 1998.
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. C. atropersonatus should have four or five black spots in its dorsal fin. Because of the snout, the most obvious difference, we have labelled the fish accordingly.
|Cat-eLog Data Sheet|
|Scientific Name||Corydoras (ln9) atropersonatus Weitzman & Nijssen, 1970|
|Common Names||Fairy Catfish
|Type Locality||Río Conambo at mouth of River Shione, Río Tigre system, about 2°00'S, 76°30'W, Pastaza State, Ecuador.|
|Pronunciation||kor ee doh rass (lineage nine). - at row person ATT uss|
|Etymology||Latin ater = black, personatus = masked.|
|Size||45mm or 1.8" SL. Find near, nearer or same sized spp.|
|Identification||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.|
|Sexing||Female is fuller (when viewed from above) and larger.|
|Distribution||South America: Upper Amazon River basin.
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)
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|IUCN Red List Category||Data Deficient, range map and more is available on the IUCN species page. Last assessed 2014.|
|pH||5.6 - 7.0|
|Temperature||21.0-24.0°C or 69.8-75.2°F (Show species within this range)|
|Feeding||Sinking catfish pellets and bloodworm.|
|Furniture||Needs a rounded substrate or sand. This species is prone to barbel loss at the hands of inept water management / inappropriate substrate.|
|Compatibility||Peaceful, keep in groups of 6 or more.|
|Suggested Tankmates||Most small community fish. Tetras are ideal.|
|Breeding||Breeding 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.|
|Breeding Reports||There are 2 breeding reports, read them all here.|
|Reference||Beaufortia v. 18 (no. 233), pp 123, Figs. 2, 6b.|
|Registered Keepers||Keeping this species? Why not .
There are 69 registered keepers, view all "my cats" data.
|Wishlists||Love this species? Click the heart to add it to your wish list.
There are 8 wishes to keep this species, see who wants what.
|Spotters||Spotted this species somewhere? Click the binoculars!
There are 29 records of this fish being seen, view them all.
|More on Corydoras (ln9) atropersonatus|
|Look up Corydoras (ln9) atropersonatus on AquaticRepublic.com|
|Look up Corydoras (ln9) atropersonatus on Fishbase|
|Look up Corydoras (ln9) atropersonatus on Encyclopedia of Life|
|Look up Corydoras (ln9) atropersonatus on Global Biodiversity Information Facility|
|LFS label creator.|
|Last Update||2020 Oct 22 11:12 (species record created: 1998 Apr 01 11:22)|
Copyright information for the images used in this article can be found on the species' full Cat-eLog page.
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