Duplicate Corydoras - Corydoras duplicareus : Complete Fish Profile & Care Guide
Table of contents
Introduction
The Duplicate Corydoras (Corydoras duplicareus) is a relatively uncommon species within the aquarium hobby. However, it proves to be an excellent choice for community aquariums due to its small size, peaceful temperament, and remarkable resilience.
To create an aesthetically pleasing and harmonious environment for these sociable, shoaling fish, it is recommended to keep them in groups of at least six individuals, although larger groups are preferable. Maintaining a soft sand substrate is crucial for the well-being of Duplicate Corydoras, as it helps prevent barbel infections that can be caused by sharp gravel.
Regular maintenance, including frequent partial water changes, is essential to ensure the ongoing health and vitality of these delicate creatures. To enhance the overall habitat, dense planting and the provision of shaded retreats amongst carefully selected bogwood are highly beneficial.
Duplicate Corydoras can coexist with a wide range of compatible tankmates commonly found in the aquarium hobby, including Dwarf Cichlids, Tetras, small to medium-sized Barbs, Gouramis, and other peaceable Catfish. However, it is important to note that these Corydoras may prey on smaller Dwarf Shrimp, making it advisable to house them with larger shrimp species and other ornamental invertebrates.
Caution should be exercised when selecting tankmates, as larger or more aggressive species can intimidate and outcompete Duplicate Corydoras for food resources. The distinctive appearance of Duplicate Corydoras adds to their allure. These fish display light tan heads and bodies adorned with intricate gold-coloured speckling along the lateral line.
The upper half of their bodies, ranging from the base of the dorsal fin to the caudal fin, showcases a contrasting dark black hue, which may vary in intensity among individuals. Furthermore, Duplicate Corydoras exhibit a striking dark-coloured mask extending from the top of the head through the eyes towards the operculum.
A captivating gold patch adorns the region between the rear of the eye mask and the base of the dorsal fin. It is worth noting that while the colouration and markings of these Corydoras exhibit variation, their unique beauty remains an unmistakable feature within the species.
Duplicate Corydoras Photos
Sexual Dimorphism
Distinguishing between male and female Duplicate Corydoras can be relatively straightforward. Adult males can be identified by their slimmer physique and slightly shorter size compared to females. Conversely, female Duplicate Corydoras exhibit significant growth, appearing larger, rounder, and broader, particularly when carrying eggs.
Quick Facts
| Scientific Name | Corydoras duplicareus |
|---|---|
| Year Described | 1995 |
| Other Names | False Adolfoi Catfish |
| Kingdom | Animalia |
| Classification | Actinopterygii |
| Order | Siluriformes |
| Family | Callichthyidae |
| Genus | Corydoras |
| Origins | Brazil |
| Max Size | 5 cm |
| Temperament | Peaceful |
| Aquarium Level | Bottom |
| Difficulty | Intermediate |
| Shoaling | Yes |
| Best kept as | Groups 6+ |
| Diet & Feeding | Omnivore |
| Reproduction | Egg Depositor |
| Average Lifespan | Up to 5 Years |
Water Parameters
| Water Type | Freshwater |
|---|---|
| pH | 4.0 - 7.0 |
| GH | 5 - 12 |
| TDS | 18 - 90 |
| ℉ | 68 - 79 |
|---|---|
| ℃ | 20 - 26 |
Natural Habitat
The Duplicate Corydoras are exclusively found in a specific region of the upper Rio Negro system in Brazil, South America. This species thrives in the unique environment of pristine blackwater habitats characterized by rapid flow and a dark discolouration caused by organic compounds. These habitats are commonly found in tributaries and flooded forests, where the sandy substrate forms the foundation of their natural habitat.
Breeding
Breeding Duplicate Corydoras can present a moderate level of difficulty. To maximize success, it is advisable to set up a separate breeding tank with a ratio of two or more males per female.
When the females exhibit noticeable signs of being full of eggs, a significant water change of 50 to 70 per cent should be conducted, using cooler water to stimulate the spawning process. Concurrently, it is crucial to enhance oxygenation and water flow within the tank. This daily routine should be repeated until the fish successfully spawn.
Duplicate Corydoras typically deposit their eggs on the tank glass, amidst fine-leaved plants, or within submerged spawning mops. Upon completion of the spawning process, it is recommended to remove either the adult fish or the eggs from the breeding tank. Should the decision be made to transfer the eggs, the raising tank must possess identical water parameters to the spawning tank and offer adequate oxygenation.
To prevent fungus development, some breeders opt to introduce a few drops of methylene blue or incorporate alder cones into the raising tank. The incubation period for Duplicate Corydoras eggs typically ranges from 2 to 4 days. Once the fry has consumed their yolk sacs, it is appropriate to introduce small live foods such as microworms and baby brine shrimp to their diet.
It is worth noting that raising Corydoras fry can pose certain challenges, with water quality playing a critical role in their overall health and survival. Maintaining a thin layer of sand as a substrate, as opposed to a bare tank, has been shown to contribute to their resilience and reduced susceptibility to diseases.
Diet & Feeding
The Duplicate Corydoras readily accepts a wide variety of high-quality dried foods, including granules, flakes, and sinking pellets. These advanced food formulations have been specifically developed to provide comprehensive nutrition, supporting the overall health and dietary requirements of your fish. Additionally, incorporating live, frozen, and freeze-dried food options such as bloodworm, daphnia, and tubifex into their diet once or twice a week can offer further benefits to their well-being, although it is not mandatory.
It is important to note that while bloodworms can be provided as an occasional treat, they should not constitute the staple diet as they can be challenging for fish to digest and may potentially lead to blockages. In their natural habitat, the Duplicate Corydoras is an omnivorous species, consuming some vegetable matter. Although modern fish foods typically incorporate these essential nutrients, you may supplement their diet with blanched vegetables such as spinach, broccoli, and zucchini. Care should be taken to avoid overfeeding, and any uneaten food should be promptly removed the following day to maintain water quality and prevent potential health issues.
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