SPECIES SPOTLIGHT: NEW CORYDORAS CATFISH DISCOVERED

Species Spotlight: New Corydoras Catfish Discovered
Updated February 09, 2018
A species of Corydoras catfish that was discovered in the 1990s has finally been officially described and named.
Also known as cory cats or cories, corydoras catfish are a group of armored catfish that make excellent additions to the freshwater tank. These little fish are very active and lively in the tank which makes them a joy to keep, plus they help to clean up accumulated detritus like uneaten fish food from the bottom of your tank. There are many different species of corydoras catfish to choose from, including one species that has only been recently described – Corydoras eversi.

About Corydoras Catfish

The name corydoras is given to a genus of freshwater fishes that belong to the Corydoradinae subfamily, or the armored catfish family. The name corydoras comes from the Greek words kory, or “helmet,” and doras, or “skin”. With more than 160 unique species, the corydoras genus is by far the largest genus of neotropical fish species. Though many corydoras species have been named and described, there are hundreds of species that have not – these are usually given C-numbers instead of names to differentiate them from other species. You may be familiar with this practice as it is also applied to other catfish species, including Plecostomus.

Corydoras catfish can be found throughout South America, particularly in small streams and along the margins of rivers. These fish tend to prefer slow-moving, near-still bodies of water where the water is shallow and clear. Corydoras catfish are bottom feeders, sifting through the sand or gravel at the bottom of the stream in search of food. These fish feed on different kinds of detritus as well as small insects, insect larvae, and some vegetable matter. Though cories are not piscivorous by nature they have been known to feed on dead fish.


In the home aquarium, corydoras catfish are a lively addition that can help to clean up accumulated detritus. These fish tend to do best in shoals with at least three or more of their own species. You can mix different species of corydoras catfish together as long as you have at least 3 of them, though 5 or more is better. Most corydoras prefer soft, slightly acidic water conditions and they have a wide temperature range they can tolerate. Because corydoras have plates and not scales, they are highly sensitive to nitrate levels and ammonia levels – they are also sensitive to sharp substrate due to the soft barbels they have on their noses.

New Species: Corydoras eversi

Like many corydoras catfish, the species now known as Corydoras eversi has existed in the aquarium industry for many years under a temporary name. While many undescribed corydoras are given C-numbers, this species was known for years as Corydoras sp. Guarana, or the soda pop cory. Discovered in the 1990s, this species is native to the Rio Araguaia in Brazil and it is named after Hans-Georg Evers who was one of the first collectors of the species. The species is named in honor of him due to his success in breeding the species.

According to an article published in the journal Neotropical Ichthyology, Corydoras eversi is one of just three corydoras species found in the Rio Araguaia basin. This species tends to inhabit clear water streams with sandy ground and fast water flow. Though spotted like many corydoras species, Corydoras eversi is unique for its orange coloration. This species is unique in that its color remains constant in both its native environment and in captivity – many aquarium fish lose become more vibrant in captivity with a rich diet of fresh and frozen foods. The Corydoras eversi is just as vibrant in captivity as in the wild.


Top Corydoras Species for the Home Tank

There are hundreds of different corydoras catfish species to choose from, though some are more popular and more readily available than others. Below you will find a list of some of the top corydoras species for the home tank that you should consider:

  • Peppered Corydoras (Corydoras paleatus) – The peppered cory is named for its spotted coloration and it grows to a maximum size close to 3 inches. This species is found throughout South America, particularly in clear, cooler waters in Brazil. Peppered cories are very peaceful by nature and they are ideal for cooler community tanks. These fish prefer to be kept with others of its own kind.

  • Panda Cory (Corydoras panda) – The panda cory is named for its black-and-white coloration. Most specimens have a largely white body with a black spot near the tail and one over the eye as well as black coloration on the dorsal fin. This species only grows to about 2 inches long and it is a very peaceful species that does well in a community tank. The panda cory is typically found in tributaries of the Rio Pachitea and the Rio Ucayali river systems in Peru. 
  • Pygmy Corydoras (Corydoras pygmaeus) – The pygmy cory remains very small, around 1.3 inches when full-grown. This species is typically found along the Rio Madeira in Brazil and it tends to prefer slightly soft water with a pH between 6.4 and 7.4. The pygmy cory has a fairly dark coloration with a light underbelly and a dark band running horizontally along the body from snout to tail. These fish are very peaceful and they can breed readily in the home aquarium when kept in groups with at least 2 females per one male.


  • Bronze Corydoras (Corydorus aeneus) – The bronze corydoras is by far one of the most popular species which means that it is also one of the most readily available. This species is found in the West Indies where it prefers slow water movement and a pH between 6.5 and 7.5. Bronze cories grow up to 3 inches long and they prefer to be kept in larger shoals of at least 6 corydoras. These fish are great for beginners because they are hardy, easy to keep, and they will eat anything.
  •  Adolfo’s Cory (Corydoras adolfoi) – This species has a largely white body with a dark spot over the eye and orange coloration on the head – it also has a dark band running along the back from dorsal to caudal fin. Adofo’s cory grows to about 2.4 inches in length and prefers black water conditions. This species does best when kept in groups of 6 or more, ideally 3 males per 1 female for breeding purposes.

Regardless which species you choose, corydoras catfish make an excellent addition to the freshwater tank. Not only are these little fish lively and full of energy but they can help to keep your tank clean as well. If you want to experience the joy of corydoras in your own tank, pick a species or two from the list above and head to your local pet store! 

comments powered by Disqus

Most Recent Forum Discussions

  • Collecting from the Ocean - By blenny, 08/13/18 03:39:26 am (0 replies)

    I would need to check with local laws before doing this. But I wanted to find out more about collecting SW fish. Has anyone done ...

  • Getting SW shrimp to breed - By blenny, 08/13/18 03:36:10 am (0 replies)

    What are some methods to encourage SW shrimp to breed? Are there actually SW shrimp that breed as easily as FW? Also, any species to ...

  • Old saltwater - recycling it? - By clownfishgirl, 08/10/18 12:51:27 am (1 replies)

    Does anyone ever do anything with their old saltwater when they do water changes or do you simply pour it down the drain? I was ...

MOST RECENT ARTICLES

Tips for Aquascaping a Tank for Large Freshwater Fish
TIPS FOR AQUASCAPING A TANK FOR LARGE FRESHWATER FISH
Keeping large species of freshwater fish in a community tank can be challenging but, with proper planning, you can be successful.
How Has Technology Changed the Aquarium Hobby?
HOW HAS TECHNOLOGY CHANGED THE AQUARIUM HOBBY?
Advances in modern technology have changed the world we live in, but how has it affected the aquarium hobby?
The Most Popular Catfish for Freshwater Tanks
THE MOST POPULAR CATFISH FOR FRESHWATER TANKS
Catfish are an extremely diverse group of fishes and many of them fare well in the home aquarium.

AQUARIUM NEWS AND TRENDS

How Has Technology Changed the Aquarium Hobby?
HOW HAS TECHNOLOGY CHANGED THE AQUARIUM HOBBY?
Advances in modern technology have changed the world we live in, but how has it affected the aquarium hobby?
The Bright and Colorful Discus Fish: Spring 2017 Aquarium Trends
THE BRIGHT AND COLORFUL DISCUS FISH: SPRING 2017 AQUARIUM TRENDS
Discus fish are some of the most brightly colored fish in the animal kingdom.
Shrimp in the Home Aquarium: Spring 2017 Aquarium Trends
SHRIMP IN THE HOME AQUARIUM: SPRING 2017 AQUARIUM TRENDS
If you're looking for a unique way to stock your new tank, give freshwater shrimp a try.
Aquarium News: Five New Species of Dwarfgobies Discovered
AQUARIUM NEWS: FIVE NEW SPECIES OF DWARFGOBIES DISCOVERED
Gobies are some of the smallest fish in the world and dwarfgobies are the smallest of those.
Aquascaping the Aquarium: March 2017 Aquarium Trends
AQUASCAPING THE AQUARIUM: MARCH 2017 AQUARIUM TRENDS
The art of decorating a home aquarium is called "aquascaping" and it is a trending topic in aquarium social media this month.
Cichlid Compatibility: February Week 2 Aquarium Trends
CICHLID COMPATIBILITY: FEBRUARY WEEK 2 AQUARIUM TRENDS
In the second week of February 2017, one of the highest trending topics in aquarium-related social media is in regard to cichlid compatibility.
Betta Fish Trending Topics for January 2017
BETTA FISH TRENDING TOPICS FOR JANUARY 2017
The betta fish is and will forever be one of the most popular types of aquarium fish.
Species Spotlight: The Axolotl
SPECIES SPOTLIGHT: THE AXOLOTL
If you are looking for a unique species around which to center your next tank, consider the axolotl.
Species Spotlight: New Corydoras Catfish Discovered
SPECIES SPOTLIGHT: NEW CORYDORAS CATFISH DISCOVERED
A species of Corydoras catfish that was discovered in the 1990s has finally been officially described and named.
Trending: Adding LED Moonlights to the Aquarium
TRENDING: ADDING LED MOONLIGHTS TO THE AQUARIUM
With advances in aquarium lighting technology, you now have the option to add specialized nighttime lighting to your aquarium.
Trending: Jellyfish in the Home Aquarium
TRENDING: JELLYFISH IN THE HOME AQUARIUM
You have probably seen your fair share of jellyfish in zoo aquariums, but did you know that it is possible to keep these creatures as pets?
Newly Discovered Fish Species of 2013
NEWLY DISCOVERED FISH SPECIES OF 2013
New species of plants and animals are being discovered every year.
The Top New Coral Species of 2013
THE TOP NEW CORAL SPECIES OF 2013
The saltwater aquarium hobby is ever-changing -- trends and even species come and go.
New Discovery Key to Keeping Pinnatus Batfish
NEW DISCOVERY KEY TO KEEPING PINNATUS BATFISH
The Pinnatus Batfish is one of the most striking species of saltwater aquarium fish, but notoriously difficult to keep in the home aquarium.
Study Reveals that Fish May Have Individual Personalities
STUDY REVEALS THAT FISH MAY HAVE INDIVIDUAL PERSONALITIES
While some species like Oscars are known for exhibiting dog-like behaviors, a recent study shows that many fish are capable of developing individual personalities.
Self-Poisoning: A Damaging Defense Mechanism
SELF-POISONING: A DAMAGING DEFENSE MECHANISM
If you have ever brought a group of corydoras catfish home from the store to find that they all died in transport, this article will be incredibly enlightening.
Wireless Aquarium Lighting Solutions
WIRELESS AQUARIUM LIGHTING SOLUTIONS
One of the latest developments in aquarium lighting is wireless control of LED systems.
Media Reactors - An Innovative Approach to Aquarium Filtration
MEDIA REACTORS - AN INNOVATIVE APPROACH TO AQUARIUM FILTRATION
When it comes to aquarium filtration there are many options to choose from.
Innovations in Marine Disease Treatments
INNOVATIONS IN MARINE DISEASE TREATMENTS
Treating marine aquarium diseases is easier than ever with innovations like medicated frozen fish food.
News: Unique Species to Hit the Market
NEWS: UNIQUE SPECIES TO HIT THE MARKET
The new year brings a new wave of unique species to add to your home aquarium.
Your Aquarium Might Not Be as Peaceful as You Think
YOUR AQUARIUM MIGHT NOT BE AS PEACEFUL AS YOU THINK
For many aquarium hobbyists, the aquarium is a source of relaxation and serenity.
Trending: Colorful Species for the Marine Tank
TRENDING: COLORFUL SPECIES FOR THE MARINE TANK
Color has always been a main component of the marine tank but these species are keeping the bar high.
News: Trade Continues Despite Threatened Conservation Status
NEWS: TRADE CONTINUES DESPITE THREATENED CONSERVATION STATUS
A recent paper published by the Conservation Research Group and the IUCN shows that more than 30 threatened species endemic to India are still being regularly exported, despite their conservation status.
News: Lionfish Invasion in the Atlantic
NEWS: LIONFISH INVASION IN THE ATLANTIC
Lionfish are a very popular species in the marine aquarium hobby but they have begun to threaten native populations in the Atlantic as they spread from their native habitat in the Indo-Pacific.
North American Aquariums Go Green
NORTH AMERICAN AQUARIUMS GO GREEN
From recycling and organic farming, sustainability and conservation are two hot trending topics.
How Aquarium Trends Affect the World
HOW AQUARIUM TRENDS AFFECT THE WORLD
Trends in the aquarium trade have an effect on more than just aquarium hobbyists -- they can affect the whole world.
Changes in Marine Aquarium Design
CHANGES IN MARINE AQUARIUM DESIGN
The only thing that doesn't change in the world is the fact that things change.
Trending:  Sophisticated Water Quality Monitoring Devices
TRENDING: SOPHISTICATED WATER QUALITY MONITORING DEVICES
Testing your aquarium water is a chore that no aquarium hobbyist likes.
Trending:  Nano Tanks More Popular Than Ever
TRENDING: NANO TANKS MORE POPULAR THAN EVER
A nano tank is more than just a small fish tank -- it is a compact, self-contained ecosystem.
Trending: Compact Aquarium Equipment
TRENDING: COMPACT AQUARIUM EQUIPMENT
One of the latest trends in aquarium equipment is compact upgrades.
Cleaning Your Tank Can Make You Sick
CLEANING YOUR TANK CAN MAKE YOU SICK
Cleaning your aquarium is a necessity in order to keep your fish healthy.
The Science Behind Behavior: Fish Jumping Out of Tanks
THE SCIENCE BEHIND BEHAVIOR: FISH JUMPING OUT OF TANKS
Guppies are known, in particular, for jumping out of the tank.
Cramped, Boring Environments Lead to Anger in Fish
CRAMPED, BORING ENVIRONMENTS LEAD TO ANGER IN FISH
A recent study conducted by a biology professor at Case Western Reserve University reveals that environment size and complexity has a direct impact on aggressive behavior in aquarium fish.
Trending: Glow in the Dark Fish
TRENDING: GLOW IN THE DARK FISH
Glow in the dark fish may not be a new trend but new additions to the market have recently been made -- glow in the dark convict cichlids and angelfish.
Read more articles (34)