Nanus Cory Catfish

 Quick Care Facts

• Care Level: Easy   • Temperament: Peaceful   • Maximum Size: 3"
• Minimum Tank Size: 20 gallons   • Water Conditions: 72-79° F, KH 2-12, pH 5.8-7.0
• Diet: Omnivore   • Origin: South America   • Family: Callichthyidae
• Species: Cory Catfish   • Aquarium Type: Community

Help Support AquariumDomain!      

• Your support keeps AquariumDomain advertisement free, lightning fast and fully optimized for both mobile and desktop browsing.

• Visit our Patreon page to learn about the exclusive benefits our Patrons receive!

Nanus Cory Cats are native to the streams and tributaries of South America, where they can be found living along river banks and river beds. They spend the vast majority of their time dwelling about the river bottom looking for both meaty of plant foods that have made their way to the river bottom. The Nanus is silver with a series of black stripes running horizontally from the back of the head to the tail.

They at times exhibit slight amber and purple highlights and have a pale gray belly. The Nanus Cory Cats coloration and pattern help it blend into the substrate, which helps the cory cat avoid larger predators. Nanus Cory Cats live in large social groups in the wild and prefer to live in groups within the aquarium environment as well. It is recommended to keep at least a small group of 4 or more cory cats in the aquarium to satisfy their social requirements.

As is the case with all species in the genus, Cory Cats will regularly swim quickly to the surface for a gulp of air. The fish swallows the air, which blood vessels in the hind gut extract oxygen from; it is then expelled through the vent the next time the fish breaks the surface for another gulp of air. This adaptation is believed to have evolved so that the fish can survive in poorly-oxygenated water such as stagnant pools during the dry season. It is however essential to the fish's well-being that it regularly swallows air.

Aquariums housing Nanus Cory Cats should contain plenty of vegetation, areas of diffused lighting and a sandy or smooth gravel substrate. It is important to provide plenty areas within the aquarium that are shaded from the bright aquarium lights. They will absolutely appreciate the presence of lush vegetation, driftwood and rocky caves in order to provide them a tank that resembles their native habitat.

Like all cory cat species, the Nanus Cory Cat will do much better when kept in social groups of at least 4 individuals of their own species or mixed with other cory cat species. While the Nanus Cory Cat will gladly scavenge the aquarium substrate for leftover foodstuffs and decaying plant material, they should also be provided sinking foods designed for bottom dwelling fish species.

Nanus Cory Cats are scavengers that need to eat a wide variety of foods that include both plant and meaty foods. In the wild they typically feed on small worms, benthic crustaceans, insects and decaying animal and plant matter that has settled on the river bed. In the aquarium environment the Nanus Cory Cat will readily accept a variety of meaty and vegetable matter foodstuffs including: flake, freeze-dried, frozen, live foods and pellets.

This species is an excellent scavenger that will work to keep the aquarium substrate clean of excess foodstuffs and some decaying plant matter. While this species is an excellent scavenger, supplemental foods such as bloodworms, tubifex, flake food, or sinking carnivore pellets should be offered to ensure proper nutrition.