Ehrhardt’s cory

Introduction

Ehrhardt’s cory (Corydoras ehrhardti) is a charming and peaceful bottom-dwelling fish that has become a favorite among aquarists. Known for their engaging behavior and ease of care, these small catfish are ideal for both beginner and intermediate fishkeepers. Their social nature and unique appearance make them a delightful addition to any community aquarium.

Care and Environment

Providing proper care for Ehrhardt’s cory involves creating an environment that closely mimics their natural habitat. This ensures their health and allows them to exhibit natural behaviors.

What is the minimum tank size for keeping Ehrhardt’s cory?

A minimum tank size of 75 liters is recommended to accommodate a small group of these social fish.

What are the ideal water parameters for Ehrhardt’s cory?

Maintain a temperature between 18–23°C, a pH of 6.5–7.5, and water hardness of 90–268 ppm to keep them healthy.

What type of substrate is best for Ehrhardt’s cory?

A fine sand substrate is ideal, as it prevents damage to their delicate barbels during foraging.

Incorporate hiding spots using driftwood, rocks, and plants to provide security and mimic their natural environment. Ensure the tank is well-filtered to maintain water quality, but avoid strong currents. Moderate lighting is sufficient, as these fish do not require intense illumination.

As omnivores, Ehrhardt’s cory will accept a variety of foods. Provide a balanced diet of sinking pellets, flakes, and occasional live or frozen foods like bloodworms and brine shrimp. Feed them in the evening to align with their natural activity patterns.

Origin and Habitat

Native to coastal rivers in the Santa Catarina and Paraná states of Brazil, including the Iguazu River basin, Ehrhardt’s cory inhabits minor rivers and small streams with soft substrates. These environments often feature slow-flowing waters with sandy or silty bottoms, covered with dead wood, branches, and leaves. Seasonal variations may affect water flow and vegetation, influencing their natural behaviors.

Temperament and Compatibility

Ehrhardt’s cory is a peaceful and sociable species, thriving in groups of at least 4–6 individuals. They are well-suited for community tanks with other non-aggressive fish.

What are suitable tank mates for Ehrhardt’s cory?

Compatible tank mates include small tetras, rasboras, and other peaceful species that share similar water parameter requirements.

Are there any fish species to avoid housing with Ehrhardt’s cory?

Avoid aggressive or fin-nipping species, as they can stress or harm the corydoras.

How does Ehrhardt’s cory behave in a community tank?

They are active bottom dwellers that contribute to the tank's dynamic, often seen foraging and interacting with their group.

Interesting Facts

Ehrhardt’s cory possesses some fascinating traits that enhance their appeal to aquarists.

Do Ehrhardt’s cory have any unique breathing abilities?

Yes, they are facultative air breathers, possessing a modified intestine that allows them to absorb atmospheric oxygen, enabling them to survive in low-oxygen environments.

Is there anything to be cautious about when handling Ehrhardt’s cory?

Handle them with care, as their stiffened pectoral-fin spines can pierce human skin and may secrete mildly toxic substances.

How do Ehrhardt’s cory reproduce?

They are egg scatterers, with females attaching sticky eggs to surfaces like plants or tank glass. Adults do not guard the eggs, and breeding in home aquariums is rare.

Sources

All information in this article has been gathered from the following reputable sources:

• seriouslyfish.com
• aqua-fish.net
• wikipedia.org