Venezuela Black Corydoras
Black Venezuela Cory (Osteogaster cf. schultzei “Black”)
A striking tank-bred Cory known for its deep black to dark chocolate body colour, peaceful schooling behavior, and classic bottom-foraging personality.
The Black Venezuela Cory is one of the darkest and most distinctive Cory-type catfish available in the aquarium hobby. It is also commonly searched as Black Venezuelan Cory, Black Corydoras, Black Cory Catfish, or Corydoras schultzei “Black”.
Despite the common trade name, this fish should not be confused with the true Venezuelan Cory forms historically associated with Corydoras venezuelanus. The aquarium strain commonly sold as Black Venezuela Cory is generally associated with the schultzei/aeneus group and is a selectively bred black form rather than a wild Venezuelan locality fish.
Following the recent reclassification of many Corydoras species, members of the traditional aeneus group are now placed in the genus Osteogaster. Because the exact taxonomic status of schultzei is still being evaluated, we use the practical designation Osteogaster cf. schultzei “Black” while retaining the familiar Black Venezuela Cory name for the aquarium trade.
Why this fish stands out
- Deep black to dark chocolate body coloration
- Much darker appearance than common Bronze Corys
- Peaceful and highly social bottom-dwelling catfish
- Excellent contrast in planted and aquascaped tanks
- Tank-bred strain with good aquarium adaptability
- Active, entertaining group behavior
- Excellent choice for Cory collectors and community aquariums
Best for
- Planted community aquariums
- Corydoras collectors
- Peaceful tropical fish communities
- Aquariums with fine sand substrate
- Customers looking for a dark or black freshwater fish
- Aquarists looking for Black Corydoras in Canada
Topick Aquarium Insight
Black Venezuela Corys are often purchased because of their colour, but their social behavior is just as important. One or two Corys may survive, but a proper group behaves completely differently.
In a group, they forage together, rest together, explore more confidently, and spend considerably more time in the open. For this reason, we recommend purchasing them as a group rather than as a single decorative bottom fish.
Another common misunderstanding is that Corys are “cleaner fish” that can survive on leftovers. They will forage through the substrate, but they still need their own complete sinking foods. A clean aquarium with properly fed Corys is much healthier than an aquarium where they are expected to live from waste.
Is Black Venezuela Cory Really From Venezuela?
The name is misleading. The common aquarium strain sold as Black Venezuela Cory is not normally treated as a black form of true Corydoras venezuelanus.
It is widely associated in the aquarium hobby with the schultzei/aeneus lineage and was developed as a selectively bred dark strain. The “Black Venezuela” name became established in the trade and remains the term most customers recognize.
We therefore retain Black Venezuela Cory as the common product name while using the more accurate scientific/trade designation Osteogaster cf. schultzei “Black”.
Black Venezuela Cory vs Venezuela Cory
These names are often confused, but they should not automatically be treated as the same fish.
- Black Venezuela Cory: selectively bred deep-black aquarium strain associated with the schultzei/aeneus group
- Venezuela Cory: historically used for Venezuelan forms within the broader aeneus complex
- Venezuela Orange Cory: typically shows warm orange or bronze coloration rather than a nearly solid black body
This distinction is especially important when purchasing fish for breeding or maintaining a specific Cory line.
Behavior & Group Size
Black Venezuela Corys are peaceful, social bottom dwellers that spend much of the day searching the substrate for food and exploring the lower areas of the aquarium.
We recommend keeping at least 6 fish. Groups of 8–10 or more are even better when aquarium size allows and usually produce more confident and natural behavior.
Occasional rapid trips to the surface are normal. Cory-type catfish can gulp atmospheric air and then return to the bottom.
Tank Setup
Black Venezuela Corys are adaptable, but a properly designed bottom area makes a major difference to their long-term health and natural behavior.
- 20 gallons or larger recommended for a proper group
- Longer tank footprint preferred over a tall narrow aquarium
- Fine sand is strongly recommended
- Smooth fine gravel can also work if it has no sharp edges
- Plants, driftwood, leaf litter, and shaded areas provide security
- Good filtration and oxygenation recommended
- Maintain clean substrate without allowing heavy waste accumulation
Fine sand allows Corys to naturally sift through the substrate with their barbels and mouth. Rough or sharp substrate should be avoided because repeated contact can damage sensitive barbels and the underside of the fish.
Water Parameters
- Trade Name: Black Venezuela Cory
- Scientific / Trade Designation: Osteogaster cf. schultzei “Black”
- Older Aquarium Name: Corydoras schultzei “Black”
- Common Names: Black Venezuela Cory, Black Venezuelan Cory, Black Corydoras, Black Cory Catfish
- Temperature: approximately 22–26°C
- pH: approximately 6.0–7.5
- Hardness: soft to moderately hard water
- Adult Size: approximately 5–6 cm
- Temperament: Peaceful and social
- Diet: Omnivore
- Care Level: Beginner to Intermediate
Tank-bred Black Venezuela Corys are generally adaptable to a reasonable range of aquarium conditions. Stable temperature, clean water, adequate oxygen, and consistent maintenance are more important than constantly chasing an exact pH value.
Feeding
Black Venezuela Corys are omnivorous bottom feeders and should receive their own complete diet. They are not able to live healthily on fish waste or leftover food alone.
- High-quality sinking Cory or catfish pellets
- Fine sinking granules
- Frozen bloodworms in moderation
- Frozen brine shrimp
- Daphnia
- Tubifex or blackworms from safe sources
- Occasional vegetable-containing sinking foods
Feed after faster midwater fish have received food so enough reaches the bottom. In heavily stocked community tanks, targeted feeding is often necessary.
Tank Mates
Black Venezuela Corys are excellent community fish and work with a wide range of peaceful freshwater species.
- Tetras
- Rasboras
- Danios
- Rainbowfish
- Peaceful gouramis
- Livebearers
- Apistogramma in appropriately sized tanks
- Other peaceful Corys and catfish
Avoid large predators or highly aggressive bottom-dwelling fish. When breeding dwarf cichlids, remember that Corys do not understand territorial boundaries and may repeatedly enter spawning areas.
Shrimp Compatibility
Black Venezuela Corys are generally compatible with adult Neocaridina, Caridina, and Amano Shrimp. They are not specialized shrimp hunters.
Extremely small newborn shrimplets can never be guaranteed in a community aquarium, but Corys are considerably safer around shrimp than predatory bottom fish.
Breeding
Healthy mature Black Venezuela Corys can be bred in aquariums. Females become noticeably broader when viewed from above, while mature males are usually slimmer.
Spawning is often encouraged by conditioning adults with quality frozen or live foods followed by a cooler water change. Eggs are typically attached individually or in small groups to aquarium glass, plants, or other surfaces.
For intentional breeding, eggs can be moved to a separate container or breeding tank to prevent adults and other fish from eating them. Newly hatched fry require very small foods before progressing to baby brine shrimp and fine sinking foods.
Canada-Wide Live Fish Shipping
Black Venezuela Cory is available from Topick Aquarium in Canada when in stock. Local pickup is available in Markham, Ontario, and Canada-wide live fish shipping may be available depending on weather, route, and livestock condition.
Important Note
The name “Black Venezuela Cory” is a long-established aquarium trade name and should not be interpreted as proof that this selectively bred black strain originates from Venezuela.
Corydoras taxonomy has also changed significantly in recent years. Older aquarium references may use Corydoras schultzei, while newer classifications place the relevant lineage within Osteogaster. For this product we use Osteogaster cf. schultzei “Black” as a cautious current designation.
FAQ
What is a Black Venezuela Cory?
Black Venezuela Cory is a selectively bred, deep-black Cory-type catfish commonly associated with the schultzei/aeneus group. It is also sold as Black Venezuelan Cory, Black Corydoras, or Corydoras schultzei “Black”.
Is Black Venezuela Cory really from Venezuela?
The commonly sold aquarium strain should not be assumed to be a wild Venezuelan fish. “Black Venezuela” is a long-established trade name for the selectively bred black strain.
Is Black Venezuela Cory the same as Corydoras venezuelanus?
No. The common Black Venezuela aquarium strain is generally associated with the schultzei/aeneus lineage and should not be labelled simply as a black form of Corydoras venezuelanus.
What is the scientific name of Black Venezuela Cory?
Older aquarium literature commonly uses Corydoras schultzei “Black”. Following recent Corydoras revisions, the lineage is placed within Osteogaster, although the exact species-level status of schultzei remains unresolved. We therefore use Osteogaster cf. schultzei “Black”.
How many Black Venezuela Corys should I keep?
Keep at least 6. Groups of 8–10 or more usually show more confident, active, and natural social behavior when aquarium space allows.
How big does Black Venezuela Cory get?
Adults are generally around 5–6 cm, with females often growing slightly larger and fuller-bodied than males.
Does Black Venezuela Cory need sand?
Fine sand is strongly recommended because it allows natural sifting behavior and is gentle on the barbels. Smooth fine gravel can also work, but sharp substrate should be avoided.
Is Black Venezuela Cory a cleaner fish?
It will forage for food on the bottom, but it should not be treated as a waste cleaner. Corys require their own quality sinking foods and normal aquarium maintenance.
Can Black Venezuela Cory live with shrimp?
Adult dwarf shrimp and Amano Shrimp are generally compatible. Extremely small shrimplets may still be vulnerable in any community aquarium.
Is Black Venezuela Cory beginner-friendly?
Yes. Tank-bred Black Venezuela Corys are relatively hardy when kept in a mature aquarium with clean water, suitable substrate, proper feeding, and a group of their own kind.
Why is my Black Venezuela Cory turning lighter?
Colour can change with stress, lighting, substrate, social condition, age, and overall health. Newly introduced fish may appear temporarily lighter and usually darken as they settle.