Life History and Behavior
Molecular Biology and Genetics
Statistics of barcoding coverage: Corydoras pygmaeus
Public Records: 0
Specimens with Barcodes: 3
Species With Barcodes: 1
Relevance to Humans and Ecosystems
The pygmy corydoras or pygmy catfish (Corydoras pygmaeus) is a tropical and freshwater fish belonging to the Corydoradinae sub-family of the Callichthyidae family. It originates in inland waters in South America, and is found in the Madeira River basin in Brazil.
The fish will grow in length up to 0.75 inches (2.1 centimeters) with females being larger than the males. It lives in a tropical climate in water with a 6.0 - 8.0 pH, a water hardness of 2 - 25 dGH, and a temperature range of 72 - 79°F (22 - 26°C). It feeds on worms, benthic crustaceans, insects, and plant matter.
It lays eggs in dense vegetation and adults do not guard the eggs. The female holds 2-4 eggs between her pelvic fins, where the male fertilizes them for about 30 seconds. Only then does the female swim to a suitable spot, where she attaches the very sticky eggs. The pair repeats this process until about 100 eggs have been fertilized and attached.
In the aquarium
Pygmy corydoras are of commercial importance in the aquarium trade industry.
It is a peaceful fish and can be kept in a community aquarium of smaller fish species such as ember tetras. It can be fed most sinking foods but may eat flakes. It enjoys frozen food and sinking wafers. It can be kept with small shrimp and snails. These cories should't be kept in tanks smaller than 10 gallons because they like room to swim around. Used fine grained substrate or their little barbels may wear down. Keep the temperature between 70 and 80 degrees Fahrenheit with a pH of 6.0 - 7.5.
They are peaceful fish and like to live in groups of at least four and will also behave much more naturally in larger groups (10 or more). Unlike the larger more common Corydoras, they often swim in a shoal around mid water regions as well as the lower regions of the tank.
C. pygmaeus are good pets as they are fairly hardy. However, there are several things to keep in mind when planning to keep this species. They are inoffensive fish which will not thrive with aggressive tankmates. They are perhaps best kept in a planted species tank, or with shrimp such as Neocaridina spp. They seem to do best when offered live foods in addition to prepared food items. Appropriate foods include microworms or similar nematodes, as well as Artemia nauplii (newly hatched brine shrimp.)
EOL content is automatically assembled from many different content providers. As a result, from time to time you may find pages on EOL that are confusing.
To request an improvement, please leave a comment on the page. Thank you!