Max Size: 6cm

Palespotted Corydoras (Corydoras gossei)

The Palespotted Corydoras is a small, peaceful freshwater Catfish that has become quite popular in the home aquarium. This fish species is easy to care for and incredibly hardy but can be somewhat shy. These Corys are an excellent addition to any community aquarium and display charming behaviours.

Corys are shoaling species in nature; therefore, it would be best to maintain them in a group of at least six individuals, preferably more. Keeping these fish in bigger numbers will allow your fish to feel more comfortable, leading to a much more natural-looking display.

Ideal tankmates for the Horseman's Cory could include smaller species such as Rasboras, small Barbs, Pencilfish, Dwarf Cichlids, Angelfish and Tetras. However, it is recommended that you do not house these Corys with other bottom-dwelling species that may become territorial such as Rainbow Sharks, as these Corys can soon become intimidated.

Setting up the aquarium for the Palespotted Cory is relatively simple; however, they require high water quality. Their health can decline fast if you do not regularly perform water changes and clean the aquarium substrate thoroughly.

The substrate should either be sand or smooth gravel, and adding plants and decor such as bogwood or smooth rocks to the aquarium will be beneficial as it will provide cover for your fish. Nevertheless, you must ensure there are no sharp edges on the decor as this may damage or injure the fish.

Adding heater guards in your aquarium may also be helpful, as this prevents your fish from getting burnt on a bare heater, although this rarely happens. Finally, the lighting in your aquarium should be reasonably dim as these Corys do not appreciate bright lighting.

The Palespotted Corydoras have a brownish head, greyish colouration on the upper half of their body and a creamy colouration on their lower half. Their Pectoral pelvic and dorsal fins display a yellow-orange colouration on the top edge, but the rest of their fins are usually transparent. In addition, Their caudal fin is translucent with 3 to 4 rows of transverse dark lines.

Quick Facts
Scientific NameCorydoras gossei
Year Described1972
Other NamesGosse's Cory, Smokey Cory
Aquarium LevelBottom
DifficultyBeginner - Intermediate
Best kept asGroups 6+
Lifespan3 - 5 years
Water Parameters
Water TypeFreshwater
PH5.5 - 7.0
GH2 - 12
TDS36 - 179
72 - 79℉
22.2 - 26.1℃


Palespotted Corydoras
Palespotted Corydoras

Natural Habitat

The Palespotted Corydoras is endemic to the Rio Mamoré system, a significant tributary within the upper Rio Madeira near Guajará Mirim in Rondônia State in Brazil in South America. These Corys inhabit tannin-stained waters with a moderate water flow and a sandy substrate. There is not much vegetation in their habitats.


Palespotted Corydoras are not particularly fussy in the home aquarium. They will accept sinking dried foods and small live, frozen and freeze-dried foods such as bloodworm, Tubifex, and mosquito larvae. Providing your Corys with a varied diet will ensure your fish are in satisfactory condition. However, under no circumstances should your Corys be expected to prevail on leftover food from other aquarium inhabitants or expected to 'clean' the aquarium.

Sexual Dimorphism

It can be challenging to differentiate between a male and female Palespotted Corydoras. However, females are typically larger and fuller-bodied when viewed from above, especially when gravid. In contrast, males are slightly smaller and slimmer than females.


The Palespotted Corydoras is relatively easy to breed if you have the correct water parameters. It would be best to place two males with every female into a separate breeding tank with established, well-oxygenated water, ensuring plenty of plants or areas for the female to stick her eggs.

When the females are noticeably full of eggs, you should perform a significant water change with cooler water and increase the oxygenation and flow in the tank. It would help if you then repeated this daily until the fish spawn. Once they are ready to spawn, the pair will perform the classic 'T position. The males will fertilise the eggs between the female's pelvic fins, and the female will then deposit the eggs onto decor, plants, or on the sides of the aquarium.

Once spawning is complete, you should remove either the adults or the eggs. If you decide to move the eggs, the raising tank will need to have the same water parameters as the spawning tank and be well-oxygenated.

Some breeders add a few drops of methylene blue into the raising tank, and others use Alder Cones. This will help prevent the eggs from developing fungus. The incubation period usually takes between 3 and 5 days, and once hatched, you can provide them with powered fry food for a few days moving on to small live foods such as microworm and baby brine shrimp as they grow.

Other Corydoras of interest

Adolfos Catfish(Corydoras adolfoi)
Agassizs Corydoras(Corydoras agassizii)
Albino Corydoras(Corydoras aeneus)
Armatus Corydoras(Corydoras armatus)
Axelrods Corydoras(Corydoras axelrodi)
Banded Corydoras(Scleromystax barbatus)
View all Corydoras
Date Added: 15/07/2022 10:42:57 - Updated: 15/07/2022 11:08:32