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Dusky Corydoras

Dusky Corydoras

Origin

🇧🇷

Brazil

South America

Habitat Size

50- 150 liters

Water Type

Fresh Water

Water Temperature

22º-28ºC

Cost in India

₹80 - ₹150

Size

2 - 3 inches (Small)

Diet

Omnivore

A single Dusky Corydoras fish with subtle markings rests on the sandy bottom of an aquarium
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by Happy Pet TeamUpdated on 20 Nov 2025

The Dusky Corydoras (Corydoras septentrionalis), a small freshwater catfish also known as the Northern Longnose Cory, is loved by aquarists for its unique snout and calm nature. Its length is from around 2 to around 2.5 inches. It suits aquariums that are medium-sized perfectly. When it comes to appearance, it has a dusky grey body that gives it a simple look. Gentle whiskers also give it a charming sort of look.

Dusky Corydoras Origin

This species originates in South America within the Orinoco River basin. They live in the wild, in slow waters with soft sand bottoms. They behave in specific ways according to their natural habitat.

Dusky Corydoras Temperament

Dusky Corydoras are very calm fish. Most of their time is, in fact, spent at the bottom of that tank. They are gently foraging for food there. Being schooling fish, they feel happy as well as safe when they are kept in groups of six or five at the very least.

Compatibility with other fishes

They do get along well with other calm community fish. Tetras, rasboras, and guppies are examples of fish that are calm. They should not be kept with large or aggressive fish, as they may nip at their fins or outcompete them for food.

Dusky Corydoras Price Range

  1. Likely low-end (small/young fish, from local store or rare import): ~ ₹400–₹600
  2. More realistic/middle price (healthy specimen, good availability): ~ ₹700–₹1,000
  3. High-end (special stock, breeder/export fish, large size): could go beyond ₹1,200+

Characteristics

Temperament

Aggressive

Friendly

Compatibility with other fishes

Not Friendly

Super Friendly

Habitat Size

Small

Large

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Dusky Corydoras Habitat Requirements

Initial Setup Cost

₹4,000 - ₹12,000

Water Temperature

22º -28ºC

Water Type

Fresh Water

PH Level

6 - 7.5

Dusky Corydoras Tank Type

  1. Dusky Corydoras are freshwater fish and thrive in community aquariums.

Dusky Corydoras Aquarium Size

  1. A minimum 20-gallon tank is recommended for a small group, as it allows more swimming space for stable water quality. Larger tanks are always better.

Dusky Corydoras Water Conditions

Follow these water parameters so that you keep them comfortable. This will keep them in good health.

  1. Temperature readings: 21.7, 25.6 °C (71, 78 °F)
  2. pH level: 6.0, 7.5
  3. Water hardness: dH equals 6 to 16

Essential Equipment

Aquarium tank

Water filter

Heater

Light

Substrate

Decor

Dusky Corydoras Environment Needs

Avg Monthly Expenses

₹80 - ₹ 150

  1. Use fine sand as a substrate or use smooth gravel because sensitive barbels can be hurt by sharp gravel.
  2. Plants, as well as driftwood, should be added so that they can have hiding spots and the tank can have a natural look.
  3. Moderate lighting works best. Shaded areas are preferred.
  4. A gentle filter keeps the water clean without the creation of strong currents.
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Dusky Corydoras Nutritional Guide

Common Health Issues

Fin rot

White spot / ick

Bacterial infections

Fungal infections

Swim bladder disease

Velvet

Signs of good health

Active

Bright coloration

Good apetite

Undamaged fins

Signs of sickness

Loss of appetite

Lethargic behaviour

Tattered fins

Dull coloring

Scratching against objects

Dusky Corydoras Diet Type

  1. Dusky Corydoras are omnivores. They feed themselves on small plant matter as well as protein-rich foods.

Dusky Corydoras Suitable Foods

  1. Algae wafers, along with sinking pellets
  2. Live or frozen foods, like brine shrimp plus bloodworms
  3. Their diet does not focus on vegetables. Occasional vegetables can be consumed.

Dusky Corydoras Feeding Frequency & Tips

Provide just the amount they will eat quickly once or twice each day. Always make sure that food reaches the bottom. The fish rarely swim up toward meals. Live foods plus prepared foods allow active health to persist.

Prerequisites for a Fish

Adequate tank space

Cleanliness

Effort & commitment

Enriching Environment

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Written by

Happy Pet Team

Author

Team Happy Pet is a passionate collective of pet experts, enthusiasts, and advocates dedicated to sharing trusted and insightful content.

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Frequently Asked Questions

Can Dusky Corydoras live with other fish?

Yes, they are peaceful and compatible with many community fish.

What should I feed my Dusky Corydoras?

A varied diet of flakes, sinking pellets, and occasional live or frozen foods is ideal.

What are the signs of a healthy Dusky Corydoras?

Healthy individuals are active, display bright coloration, and have a good appetite.