Corydoras nijsseni • Callichthyidae • Cat-eLog

Cat-eLog Data Sheet
Scientific Name	**Corydoras nijsseni** Sands, 1989
Common Name(s)	C111, Nijssen's Cory, Nijssen's Corydoras
Type Locality	Trib. of the Rio Negro, Brazil.
Synonym(s)	Corydoras elegans nijsseni
Pronunciation	Kory DOOR ass - nih SENN eye
Etymology	Cory = 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. Named for Dr Han Nijssen.
Species Information
Size	50mm (2") SL. Find near, nearer or same sized spp.
Identification	Corydoras 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. Like all the other Rio Negro Corys, the black dorsal stripe can vary in size and intensity. Reminds one somewhat of C. elegans in terms of body shape.
Sexing	Males are markedly smaller in total length and in body mass. Males also generally have more intense colours with a darker saddle marking. Females can often show smaller fins than males.
Habitat Information
Distribution	South America: Brazil: Rio Negro Amazon, Middle Amazon (Solimoes), Negro (click on these areas to find other species found there) (Click the map-icon to show/hide map of species distribution)
Temperature	22.0-26.0°C or 71.6-78.8°F (Show others within this range)
Husbandry Information
Feeding	Will accept most brands of flake and pelleted food of a suitable size, preferably fast sinking. They also relish finely chopped earthworm, whiteworms, grindal and micro worms. Most frozen foods are eagerly accepted.
Furniture	Prefers a soft, shallow, sandy bottom with bogwood and plants or rocks. Caves are occasionally used to retire.
Compatibility	Very peaceful and active in a community tank.
Suggested Tankmates	All smaller community fish. More advanced aquarists will seek this species out for a Rio Negro biotope tank.
Breeding	Best attempted in a 5 gallon (imperial) aquarium with bare bottom and a half clay flower pot. Maintain at 24°C. Feed the fish well for a few days on live food and then perform an 80% water change with water at 18°C while also adding vigorous water movement by airstone. Spawns in typical Corydoras fashion and seems best with one female to two males but a single pair has no problems breeding. Eggs are laid in small clumps of ten or more on the sides of the aquarium, sometimes on the pot and other furniture if used. Fry hatch in 3 - 4 days and are feeding on live brine shrimp and microworms by day 6 - 7 depending on temperature. The young will attain 2 - 3cm long in 8 - 10 weeks.
Further Information
Registered Keepers	(1) mummymonkey (k: 3), (2) Jools, (3) hoplo (k: 3), (4) Cornuta, (5) corybreed, (6) boyneburn, (7) mace. Click on a username above to see all that persons registered catfish species. You can also view all "my cats" data for this species.
Breeding Reports	None.
	Search Planet Catfish for more on Corydoras nijsseni
	Look up Corydoras nijsseni on AquaticRepublic.com
BBCode	(for use in linking to this page from forum posts)
	(for use in linking to the species from anywhere on the web)
	Look up Corydoras nijsseni on Fishbase
	Get or print a QR code for this species profile, or try our BETA label creator.
Hits	8938 hits.
Last Update	2007 May 03 21:07 (species record created: 2001 Apr 30 00:00)

Cat-eLog Data Sheet

Scientific Name

Corydoras nijsseni Sands, 1989

Common Name(s)

C111, Nijssen's Cory, Nijssen's Corydoras

Type Locality

Trib. of the Rio Negro, Brazil.

Synonym(s)

Corydoras elegans nijsseni

Pronunciation

Kory DOOR ass - nih SENN eye

Etymology

Cory = 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. Named for Dr Han Nijssen.

Species Information

Size

50mm (2") SL. Find near, nearer or same sized spp.

Identification

Corydoras 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.

Like all the other Rio Negro Corys, the black dorsal stripe can vary in size and intensity. Reminds one somewhat of C. elegans in terms of body shape.

Sexing

Males are markedly smaller in total length and in body mass. Males also generally have more intense colours with a darker saddle marking. Females can often show smaller fins than males.

Habitat Information

Distribution

South America: Brazil: Rio Negro
Amazon, Middle Amazon (Solimoes), Negro (click on these areas to find other species found there)

(Click the map-icon to show/hide map of species distribution)

Temperature

22.0-26.0°C or 71.6-78.8°F (Show others within this range)

Husbandry Information

Feeding

Will accept most brands of flake and pelleted food of a suitable size, preferably fast sinking. They also relish finely chopped earthworm, whiteworms, grindal and micro worms. Most frozen foods are eagerly accepted.

Furniture

Prefers a soft, shallow, sandy bottom with bogwood and plants or rocks. Caves are occasionally used to retire.

Compatibility

Very peaceful and active in a community tank.

Suggested Tankmates

All smaller community fish. More advanced aquarists will seek this species out for a Rio Negro biotope tank.

Breeding

Best attempted in a 5 gallon (imperial) aquarium with bare bottom and a half clay flower pot. Maintain at 24°C. Feed the fish well for a few days on live food and then perform an 80% water change with water at 18°C while also adding vigorous water movement by airstone.

Spawns in typical Corydoras fashion and seems best with one female to two males but a single pair has no problems breeding. Eggs are laid in small clumps of ten or more on the sides of the aquarium, sometimes on the pot and other furniture if used.

Fry hatch in 3 - 4 days and are feeding on live brine shrimp and microworms by day 6 - 7 depending on temperature. The young will attain 2 - 3cm long in 8 - 10 weeks.

Further Information

Registered Keepers

(1) mummymonkey (k: 3), (2) Jools, (3) hoplo (k: 3), (4) Cornuta, (5) corybreed, (6) boyneburn, (7) mace.

Click on a username above to see all that persons registered catfish species. You can also view all "my cats" data for this species.

Breeding Reports

None.