• Source: Copyright www.jjphoto.dk

  • Source: Copyright www.jjphoto.dk

Corydoras septentrionalis (Northern Longnose Corydoras)

A distinctive species with a sandy coloured body marked with a dark patch across the face and another triangular patch on the front half of the flank. The snout is rather long, and the body relatively streamlined. On some fish there is a dark patch on the bottom of the dorsal fin. Males are similar to females, but a little less robust.


Fish information (behaviour and breeding):

A peaceful, schooling fish. Best kept in groups of six or more. Corydoras do best in aquarium with other small, peaceful community species such as tetras, danios, small barbs, gouramis, etc. Dwarf cichlids are sometimes antagonistic towards these fish, and that combination is not recommended. Although Corydoras are often purchased as "scavengers" it is important that they are regularly fed on a good-quality catfish food.

Corydoras spawn in the same basic way regardless of species; the key things for the aquarist are to replicate the natural water chemistry parameters as carefully as possible and then to thoroughly condition the adults with plenty of live or frozen foods such as bloodworms and clean tubifex worms. When the females are ready to spawn they will be obviously swollen with eggs. In many cases specific spawning triggers are required, typically early morning sunshine and the addition of slightly cooler water to the tank to mimic a rainstorm.

Spawning takes place across an hour or more, with a single female being attended by multiple males as she searches the aquarium for clean, flat areas to deposit her eggs. The males fertlise the eggs that are held in a pouch-like structure formed by her pelvic fins, and the she will carefully place them onto a stone, plant leaf, or pane of glass. Up to 200 eggs will be produced. The eggs hatch within 5 days, and once free swimming the fry will eat Artemia nauplii and liquid fry foods. Corydoras fry are generally easy to rear but relatively slow growing, and both eggs and fry can be prone to fungal infections, so putting some anti-fungal medication in the water may be useful.

Family Group: Corydoras
Distribution South America
Temperature Corydoras will happily live in temperatures ranging between 22-27C
Size 6 cm
Water Parameters Water conditions are not critical although it is best to avoid extremes.
Water PH 6.0-8.0

Useful sources of information:

Corydoras benefit from being among the most written about catfish, and there are lots of excellent books to choose from, including:
- Aqualog - All Corydoras
- Aqualog - Corydoras All C Numbers - Brand New
- Breeding Corydoradinae Catfish
- Identifying Corydoradinae Catfish


Shop stock

The latest shops to have this fish stocked in-store are listed below. Click on a shop name for full shop details, or click the link below the shops to view ALL shops that stock this fish.

Abacus Aquatics Kent DA15 8DJ View shop
Wildwoods Middlesex EN2 9BP View shop

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