Maximum size : 6 cm

Palespotted Corydoras - Corydoras gossei : Complete Fish Profile & Care Guide

Table of contents


The Palespotted Corydoras (Corydoras gossei) is a small and placid freshwater Catfish species that has gained considerable popularity among home aquarium enthusiasts. These fish are known for their ease of care and exceptional resilience, although they may display a somewhat shy demeanour. The Palespotted Corydoras make a delightful addition to any community aquarium, showcasing captivating behaviours.

Being a shoaling species in their natural habitat, it is recommended to maintain the Palespotted Corydoras in a group of at least six individuals, preferably more. By keeping them in more significant numbers, the fish will experience a heightened sense of security, resulting in a more natural and visually appealing display. Suitable tankmates for the Palespotted Corydoras include smaller species such as Rasboras, small Barbs, Pencilfish, Dwarf Cichlids, Angelfish, and Tetras. However, it is advisable to avoid housing them with other bottom-dwelling species that may exhibit territorial behaviour, such as Rainbow Sharks, as this can lead to intimidation and stress among the Corydoras.

Setting up the aquarium for the Palespotted Corydoras is relatively straightforward, but it is crucial to maintain excellent water quality. Regular water changes and thoroughly cleaning of the aquarium substrate are essential to ensure the fish's well-being. A substrate consisting of sand or smooth gravel is recommended, and including live plants, bogwood, or smooth rocks as decor provides beneficial hiding places and coverage for the fish. Care should be taken to avoid sharp edges on the decor that could potentially harm or injure the fish. Consideration can also be given to adding heater guards in the aquarium to prevent accidental burns, although such incidents are rare. Additionally, providing reasonably dim lighting is advantageous, as the Palespotted Corydoras do not favour bright illumination.

The Palespotted Corydoras display distinct colouration patterns. They possess a brownish head, with a greyish hue adorning the upper half of their body, gradually transitioning to a creamy colouration on the lower half. The Pectoral, pelvic, and dorsal fins exhibit a yellow-orange colouration along their top edge, while the remaining fins typically appear transparent. Their caudal fin is translucent, characterized by three to four rows of transverse dark lines.

Palespotted Corydoras Photos

Sexual Dimorphism

Distinguishing between male and female Palespotted Corydoras can present challenges. However, key characteristics can aid in their differentiation. Female individuals tend to exhibit a larger and fuller-bodied appearance when observed from an overhead perspective, particularly when gravid. In contrast, males are generally slightly smaller and possess a slimmer physique compared to females. These subtle distinctions provide valuable insights for distinguishing between the sexes of Palespotted Corydoras.

Quick Facts

Scientific NameCorydoras gossei
Year Described1972
Other NamesGosse's Cory, Smokey Cory
Max Size6 cm
Aquarium LevelBottom
DifficultyBeginner - Intermediate
Best kept asGroups 6+
Diet & FeedingOmnivore
ReproductionEgg Depositor
LifespanUp to 5 Years

Water Parameters

Water TypeFreshwater
pH 5.5 - 7.0
GH 2 - 12
TDS 36 - 179
Ideal Temperature
72 - 79
22 - 26

Natural Habitat

The Palespotted Corydoras calls the captivating Rio Mamoré system its home, an essential tributary in the upper Rio Madeira near Guajará Mirim, located in the vibrant Rondônia State of Brazil, South America. These delightful Corydoras gracefully navigate through tannin-stained waters. With a moderate water flow and a sandy substrate beneath their fins, they find comfort and harmony in their surroundings. Although vegetation is not plentiful in their domain, the Palespotted Corydoras thrives, showcasing the resilience and adaptability of this remarkable species.


Successful breeding of the Palespotted Corydoras can be achieved with proper attention to water parameters. For optimal results, placing two males with each female into a separate breeding tank containing well-established and well-oxygenated water is advisable. The presence of ample plants or designated areas for the female to adhere her eggs to is crucial.

When the females exhibit visible signs of being gravid with eggs, a substantial water change using cooler water should be performed, accompanied by increased oxygenation and water flow within the tank. This process should be repeated daily until the fish initiate spawning. Once ready, the pair will assume the characteristic 'T position,' with the males fertilizing the eggs positioned between the female's pelvic fins. Subsequently, the female will deposit the eggs onto suitable surfaces such as decor, plants, or the sides of the aquarium.

Upon spawning completion, removing the adult fish or the eggs from the breeding tank is recommended. If the decision is made to transfer the eggs, the raising tank must exhibit the same water parameters as the spawning tank and possess efficient oxygenation. Some breeders choose to introduce a few drops of methylene blue or employ Alder Cones in the raising tank to mitigate the risk of fungal growth on the eggs.

The incubation period typically spans between 3 and 5 days, after which the hatched fry can be provided with powdered fry food for the initial days, gradually transitioning to small live food sources such as microworms and baby brine shrimp as they grow.

Diet & feeding

Palespotted Corydoras display a versatile feeding behaviour within the confines of a home aquarium. These fish readily accept sinking dried foods, as well as a selection of small live, frozen, and freeze-dried offerings such as bloodworms, Tubifex worms, and mosquito larvae. To maintain the optimal health and well-being of your Corys, it is essential to provide them with a diverse and well-rounded diet.

It is crucial to emphasize that relying on leftover food from other aquarium inhabitants or expecting the Corys to fulfil a "cleaning" role within the aquarium is strongly discouraged. This species should not be solely dependent on remnants from other tank mates but rather provided with proper nutrition through intentional feeding practices. By ensuring a balanced and varied diet, you can contribute to the overall satisfaction and vitality of your Palespotted Corydoras.

Other Corydoras of interest