Glo Cory Catfish 101: The Only Guide You’ll Ever Need!

Glo Cory Catfish are fascinating and famous freshwater fish known for their peaceful nature and unique appearance. If you’re considering adding these delightful little creatures to your aquarium, you’ll want to know everything there is to know about them.

That’s why we’ve created the ultimate glofish Cory cats guide, covering everything from their habitat and diet to their behavior and care requirements. 

In this comprehensive guide, we’ll walk you through the basics of Glo Fish Cory’s care, including how to set up the perfect tank environment, what to feed them, and how to keep them happy and healthy. We’ll also delve into their behavior, interaction with other fish, common health issues, and how to address them. 

Whether you’re a beginner or an experienced fish keeper, this guide provides all the information you need to ensure your Glo Cory Catfish thrive in their new home. So sit back, relax, and dive into the beautiful world of Glo Cory Catfish! 

GLO Corydoras, are they really a thing?

Yes, GLO Corydoras are indeed a real thing! These beautiful fish are various popular Corydoras catfish species known for their peaceful nature and bottom-dwelling behavior.

GLO Corydoras are named for their striking iridescent scales that shimmer and reflect light, giving them a captivating and unique appearance.

They are often sought after by aquarium enthusiasts for their eye-catching colors and peaceful demeanor, making them an excellent addition to a community tank.

These fish are native to the freshwater rivers and streams of South America, where they are often found in large shoals. Like other Corydoras, GLO Corydoras are scavengers and will happily sift through the substrate in search of food and interactconstantly looking to help clean the tank.

With their vibrant colors and peaceful nature, GLO Corydoras are a natural and captivating addition to any freshwater aquarium. Brightness will vary on fish upon arrival.

How big do GloFish Cory catfish get?

GloFish Corydoras catfish typically reach a maximum size of around 3 inches (7.6 cm) in a typical home aquarium. While some sources mention the possibility of these critters seldom exceed 3 inches, this is considered rare and usually only occurs under ideal conditions.

These catfish are bottom-dwelling fish and enjoy a sandy or smooth gravel substrate. They are also known for their exciting behavior, often seen scavenging for food at the bottom of the tank.

In terms of care, GloFish Corydoras are relatively low maintenance. They enjoy a well-maintained aquarium with clean water, regular water changes, and a well-balanced diet. They are omnivores and will eat various foods, including sinking pellets, frozen or live foods, and algae wafers.

It’s important to note that GloFish Corydoras are sensitive to water parameters and should be kept in a well-established aquarium with stable water conditions. They also prefer a slightly acidic to neutral pH range.

GloFish Corydoras make a colorful and exciting addition to a community aquarium and are relatively easy to care for, making them a popular choice for beginner and experienced fish keepers.

What do Glofish Cory cats eat?

GloFish Corydoras are omnivores and enjoy a varied diet. They eat sinking pellets, shrimp in the wafers, flakes designed for bottom feeders, and live and frozen foods like brine shrimp and bloodworms. They also clean up left over food and algae in the tank.

Choosing foods high in protein and fiber is essential, as these are vital nutrients in Corydoras. You should also avoid feeding them foods high in fat, which can lead to health problems.

Here are some specific foods that are good for Glofish Cory cats:

  • GloFish Mini Wafers
  • GloFish Cory Wafers
  • Sinking pellets designed for bottom feeders
  • Live brine shrimp
  • Frozen bloodworms
  • Algae wafers
  • Blanched vegetables

You should feed your GloFish Corydoras twice daily, once in the morning and once in the evening. Give them only as much food as they can eat in two minutes.

How to Breed and care for glofish Corydoras: GloFish Corydoras Care Guide

GloFish Corydoras are a beautiful and popular choice for aquariums. They are relatively easy to care for, but there are a few things we recommend keeping these social species in mind to ensure their health and happiness.

Tank Setup:

  • Minimum tank size: 20 gallons. GloFish Corydoras are schooling fish, so they need plenty of space to swim around. Avoid keeping fish in a minimum size.
  • Substrate: Sand or fine gravel is ideal for GloFish Corydoras. They like to sift through the substrate for food, and sharp objects can damage their barbels.
  • Filtration: A good quality filter is essential for any aquarium but vital for GloFish Corydoras. They are sensitive to poor water quality.
  • Heater: GloFish Corydoras prefers warm water, so a heater is necessary. The ideal temperature range is 72-80 degrees Fahrenheit.
  • Plants: Live plants are not essential, but they can provide GloFish Corydoras with hiding places and help to improve water quality.
  • Decorations: Smooth rocks and driftwood can provide GloFish Corydoras with hiding places and help to break up the line of sight in the tank.

Water Parameters:

  • pH: 6.5-7.5
  • Hardness: 5-15 dGH
  • Temperature: 72-80 degrees Fahrenheit
  • Ammonia: 0 ppm
  • Nitrite:** 0 ppm
  • Nitrate:** 20 ppm or less


GloFish Corydoras are omnivores and will eat a variety of foods, including flakes, pellets, algae wafers, and live or frozen food. They are bottom feeders; in order they thrive we recommend feeding them glofish mini flakes to thrive. You should provide them two to three times daily, only giving them as much food as possible in a few minutes.


GloFish Corydoras are social fish and should be kept in larger groups. They will do well with other peaceful fish, such as tetras, danios, and rasboras. Avoid housing them with aggressive fish, as they will be bullied.


  • You should perform a 25% water change every week.
  • Gravel vacuum the substrate to remove uneaten food and waste.
  • Clean the filter media according to the manufacturer’s instructions.
  • Test the water parameters weekly and adjust them as necessary.


GloFish Corydoras are relatively easy to breed in captivity. The key is to provide them with a clean, well-maintained tank and plenty of hiding places. When the water temperature is raised to 80 degrees Fahrenheit, the female will lay eggs on the underside of leaves or other flat surfaces. The male will then fertilize the eggs. The fish eggs will hatch in about 48 hours, and the tiny fry will be free-swimming in just few days. You can feed the fry newly hatched brine shrimp or infusoria.

Potential health problems:

GloFish Corydoras are generally hardy fish but are susceptible to a few health problems, including ich, fin rot, and swim bladder disease. If you notice any signs of illness in your GloFish Corydoras, treat them promptly.


GloFish Corydoras can live for 5-7 years with proper care.

Here are some additional tips for caring for GloFish Corydoras:

  • Do not overcrowd the tank.
  • Do not expose the fish to sudden changes in water temperature or pH.
  • Quarantine any new fish before adding them to the tank.
  • Perform regular water changes.
  • Provide the fish with a healthy diet.
  • Monitor the fish for signs of illness.

By following these tips, you can help to ensure that your GloFish Corydoras live long and healthy lives.

Glo Cory Catfish Ratings & Reviews

Overall: Glo Corydoras catfish are generally well-rated fish, with many positive reviews from aquarists. They are praised for their:

  • Peaceful nature: Glo Corys are known for being quiet and friendly community fish. They are unlikely to bother other fish and can even be kept with larger fish that are not aggressive.
  • Active and playful: These fish constantly move, sift through the substrate, and interact with each other. Aquarists often enjoy their playful manners.
  • Easy to care for: Glo Corys are relatively hardy fish and do not require special care. They thrive in a variety of tank setups and are generally disease-resistant.
  • Unique appearance: The fluorescent colors of Glo Corys add a splash of vibrance to any aquarium. They are available in various colors, including green, orange, pink, and purple.
  • Effective bottom feeders: Glo Corys help clean the aquarium by eating leftover food and algae.

Here are some specific ratings and reviews from different websites:

GloFish website:

  • Rating: 4.5 out of 5 stars
  • Thoughts: Over 500 reviewers with positive comments praising their beauty, activity level, and ease of care.

Aquarium Co-Op website:

  • Rating: 4.5 out of 5 stars
  • Reviews: Many reviewers consider them “must-have” fish for community tanks, commenting on their peaceful nature and ability to control algae.

Live Aquaria website:

  • Rating: 4.6 out of 5 stars
  • Reviews: Aquarists highlight their hardiness and suitability for beginners and experienced hobbyists.

Here are some potential downsides to consider:

  • Shyness: Glo Corys can be shy, especially when introduced to a new tank. It may take them some time to adjust to their surroundings and become comfortable exploring the tank.
  • Schooling behavior: These fish are social creatures and should be kept in groups of at least 3-6. Keeping them alone can cause them to become stressed and withdrawn.
  • Sensitivity to water parameters: While they are generally hardy, Glo Corys are sensitive to changes in water parameters, such as pH and ammonia levels. It is essential to maintain stable water conditions in their tank.

Overall, Glo Corydoras catfish are a popular and well-regarded fish choice for aquariums. They are relatively easy to care for, peaceful, and add a unique and colorful element to any tank.

How many Glo Cory Catfish should I keep together? 

Glo Cory Catfish thrive in groups of at least six to mimic their natural schooling behavior.

What is the lifespan of Glo Cory Catfish? 

With proper care, Glo Cory Catfish can live up to 5-7 years, showcasing their longevity in a well-maintained aquarium.

Do Glo Cory Catfish require a specific substrate? 

Yes, a soft and sandy substrate is ideal for Glo Cory Catfish, as they like to sift through the substrate in search of food.

Can Glo Cory Catfish tolerate high temperatures? 

While they can adapt to various temperatures, it’s advisable to maintain a range of 72-78°F (22-26°C) for their overall well-being.

What tank mates are compatible with Glo Cory Catfish? 

Peaceful community fish like tetras, Rasboras, and smaller cichlids make excellent tank mates for Glo Cory Catfish.

How often should I perform water changes for Glo Cory Catfish? 

Regular water changes of 20-25% every two weeks help maintain optimal water quality for Glofish Cory cats.

What do GloFish Corydoras eat?

GloFish Corydoras thrive on sinking pellets, flakes, and frozen/live foods like bloodworms or brine shrimp. Their diet should be varied for optimal health.


In conclusion, the world of aquariums is full of fascinating creatures, and the Glo Corydoras Catfish is undoubtedly one of the most captivating. Its vibrant colors and peaceful nature make it popular among fish enthusiasts. Whether you’re a beginner or an experienced aquarist, the Glofish Cory Catfish is a great addition to any tank. Remember to provide them with the right environment and companions to ensure their well-being. So, if you want to add a splash of color and tranquility to your aquarium, consider the Glo Cory Catfish as your new aquatic companion.

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About Me

I am the founder of, a devoted wife and mother, and an avid fish enthusiast. My aim is to assist fellow fish lovers worldwide in understanding how to properly care for and breed their pet fish.

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