Max Size: 6cm

Sands Corydoras (Corydoras davidsandsi)

The Sands' Cory is a beautiful Catfish ideal for an established softwater aquarium. These Corys are easy to care for and are quite hardy; however, they can be somewhat shy. Nevertheless, these Corys are an excellent addition to any community aquarium and display captivating behaviours.

It would be best to maintain this peaceful bottom dweller in groups of 5 or more individuals due to their shoaling nature. Keeping these fish in more significant numbers will allow your fish to feel more comfortable, leading to a much more natural-looking display.

Ideal tankmates for the Sand's Corydoras could include other peaceful species such as smaller Pencilfish, Tetras, Dwarf Barbs, and Rasboras. The presence of these fish in midwater will encourage your Corydoras to come out into view more often.

Ideally, it would be best if you used a substrate of fine sand, although smooth gravel is an acceptable alternative, provided you keep it relatively clean. Choice of d├ęcor is mainly down to personal preference; however, you will need to make sure you provide shelter to give your fish security. You can use driftwood, rocks and hardy aquatic plants to achieve this. Still, you must ensure there are no sharp edges on the decor as this may damage or injure your fish.

The Sand's Cory requires high water quality as their health can decline fast; therefore, it is essential that you carry out regular maintenance, including frequent partial water changes, to keep these fish in acceptable condition.

The Sand's Corydoras has a light brown body contrasted with a black band that runs across its head and eyes. In addition, these Corys have a second bold black stripe that runs diagonally down to the bottom of the caudal fin lobe from the top of their dorsal fin, which splits at the root of the caudal fin. Lastly, the gill cover has a faint orange spot, and the flanks have no further markings.

Quick Facts
Scientific NameCorydoras davidsandsi
Year Described1987
Other NamesSand's Cory
Aquarium LevelBottom
DifficultyBeginner - Intermediate
Best kept asGroups 6+
Lifespan3 - 5 years
Water Parameters
Water TypeFreshwater
PH5.0 - 7.0
GH2 - 12
TDS18 - 90
68 - 79℉
20 - 26.1℃


Sand's Corydoras
Sand's Corydoras
The Sands' Corydoras

Natural Habitat

The Sand's Corydoras is endemic to the Rio Unini, a tributary of the Negro River basin in Brazil in South America. These Corys inhabit very fast-flowing tannin-stained, somewhat acidic waters in rivers, streams and lakes. The substrate in these habitats comprises twigs, branches and decaying leaves, and they are surrounded by dense rainforest.


The Sand's Corydoras is not incredibly fussy in the home aquarium. They will readily accept good quality sinking dried foods and small live, frozen and freeze-dried foods such as bloodworm, Tubifex, and mosquito larvae.

You must make sure you provide your Corys with a varied diet to ensure your fish are in satisfactory condition. However, under no circumstances should your Corys be expected to endure on leftover food from other aquarium inhabitants or expected to 'clean' your aquarium.

Sexual Dimorphism

It is somewhat straightforward to differentiate between the male and female Sand's Corydoras. Females are slightly longer, are higher-bodied and look wider than males when viewed from above, as they have a larger underbelly. In contrast, males are shorter and slimmer than females.


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

When the females are noticeably full of eggs, you can encourage spawning by simulating a rain storm; you can achieve this by doing a significant water change, replacing it with cooler water, and increasing the oxygenation and flow in the tank. It would help if you then repeated this daily until the fish spawn.

Once your fish 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 on the sides of the aquarium, onto plants, or on available decor.

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 use Alder Cones, and others add a few drops of methylene blue into the raising tank. This will help prevent the eggs from growing 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: 20/07/2022 15:51:27 - Updated: 20/07/2022 16:34:47