Max Size: 5cm

Vulcan Corydoras (Corydoras sp)

Vulcan Corys are a relatively new species that carries a high price tag; however, they are a stunning Catfish. These Corys are peaceful and sociable fish that would make an excellent member of a community aquarium with other harmonious species or a species-only aquarium. However, this fish's sensitivity to water conditions makes them unsuitable for the beginner aquarist.

In nature, these fish shoal together; therefore, it would be best to keep them in a group of at least six individuals; otherwise, they may become withdrawn, easily stressed, and more susceptible to illness.

Vulcan Corys would be best housed with other small to medium peaceable tankmates such as Rasboras, Danios and Tetras, as well as Pencilfish and Dwarf Cichlids, smaller Barbs and Otocinclus Catfish. It is also acceptable to house these fish with shrimp and aquarium snails. However, you should not house them with aggressive fish, as they may get harmed by Cory's venomous spines if they try to attack them.

Ideally, it would be best to use fine sand as a substrate in your aquarium, although smooth gravel can also be used, as long as you clean it regularly. Aquarium decor is not necessary; however, you should provide some cover using driftwood, bogwood, rocks or tall or floating aquatic plants, so these fish have some security if needed. It would also benefit your fish if you added some dried leaf litter.

The Vulcan Cory has a silvery-beige body contrasted with dark irregular patterning consisting of numerous lines and spots that spread through to all of their fins. In addition, this Catfish has a very long and prominent dorsal fin and a short snout.

Quick Facts
Scientific NameCorydoras sp
Year Described2016
Other NamesCW111, Zebrina Cory
Aquarium LevelBottom
Best kept asGroups 6+
Lifespan3 - 5 years
Water Parameters
Water TypeFreshwater
PH6.0 - 8.0
GH2 - 25
TDS36 - 215
71 - 80℉
21.7 - 26.7℃

Photos of the Vulcan Corydoras

Vulcan Corydoras
Vulcan Corydoras

Natural Habitat

Currently, there is little information on the natural habitat of Vulcan Corydoras; however, we do know that these Corys are endemic to the

upper Rio Curua, a tributary of the Iriri River in Brazil in South America.

What to feed the Vulcan Corydoras

Vulcan Corys are unfussy and will accept various foods in the home aquarium. However, it would be best to provide your Corys with good quality dried foods such as sinking pellets, granules and algae wafers alongside frozen, live and freeze-dried foods such as mosquito larvae, and bloodworm, daphnia and brine shrimp.

This Catfish is a brilliant scavenger that will work hard to keep the aquarium substrate clean of decaying plant matter and excess foods.

How to sex the Vulcan Corydoras

It is relatively simple to differentiate between male and female Vulcan Corys. Females are usually slightly larger and fuller-bodied when viewed from above, especially when gravid and have a much smaller and rounder dorsal fin than the males. In contrast, males are slightly smaller and slimmer than females and have an elongated and pointed dorsal fin.

How to breed the Vulcan Corydoras

Unfortunately, at the moment, there is very little information on how to breed Vulcan Corys. However, these Corys are likely to produce similar to other Corys.

If you would like to reproduce these Corys, then it is recommended that you have a separate breeding tank prepared. This tank can be undecorated, but a soft substrate is a must, as your Corydoras will prefer to feed by rummaging in the substrate for food.

Make sure you condition the pair with live and frozen foods, keep the pH steady and drop the water temperature slightly when doing water changes, as this will usually induce spawning. As the female gets close to spawning, you will notice her starting to clean the surface of leaves or the aquarium glass on which she will deposit her eggs.

The female will cup her pectoral fins to form a basket into which she carries and releases a few eggs at a time while the male fertilises them. She then chooses a safe spot to hide the eggs, usually near thick vegetation, and continues the process until she has run out of eggs.

Typically, the female will lay around 100 eggs in several safe places. However, once all the eggs have been laid, the adults will take no further part in raising their offspring and may consume the eggs if given a chance, so it would be best to either return the parents to their usual tank or remove the fry.

It usually takes between two and four days for the eggs to hatch, depending on the water conditions and the water temperature, and then an additional two to three days for them to consume their yolk sacs and become free-swimming. It would be best to feed the fry with a diet of infusoria or microworms until they are big enough to accept flakes and granules.

Once the fry grows to a worthy size and other fish won't see them as a snack, you can introduce them into the community aquarium, where they will join the existing shoal. However, before moving the young fish into the community aquarium, make sure you have balanced the water parameters to decrease the risk of triggered diseases.

Other Corydoras of interest

Adolfos Catfish(Corydoras adolfoi)
Agassizs Corydoras(Corydoras agassizii)
Albino Corydoras(Corydoras aeneus)
Banded Corydoras(Scleromystax barbatus)
Bandit Corydoras(Corydoras melini)
Black Venezuela Corydoras(Corydoras schultzei "Black Venezuela")
View all Corydoras
Date Added: 12/05/2022 11:57:39 - Updated: 12/05/2022 12:46:53