Threestripe Corydoras (Corydoras trilineatus)
The Threestripe Corydoras (Corydoras trilineatus) is a peaceful and highly popular freshwater catfish known for its intricate maze-like pattern and distinctive horizontal stripe running along its body. Often confused with the True Julii Corydoras (Corydoras julii), the Threestripe Cory features a more reticulated, net-like pattern across its head and body.
Native to the Amazon Basin of Peru, Colombia, and Brazil, Threestripe Corydoras are active bottom dwellers that thrive in groups and spend their days exploring the substrate in search of food. Their peaceful temperament, attractive markings, and beginner-friendly care requirements make them a favorite among freshwater aquarists.
Perfect for planted aquariums and community tanks, these social catfish bring constant activity and personality to the lower levels of the aquarium.
Quick Facts
- Scientific Name: Corydoras trilineatus
- Common Names: Threestripe Corydoras, False Julii Cory, Leopard Cory
- Adult Size: 2–2.5 inches
- Temperament: Peaceful
- Care Level: Easy
- Diet: Omnivore
- Lifespan: 5–10 years
- Minimum Tank Size: 20 gallons
- Water Temperature: 72–78°F
- pH Range: 6.5–7.5
- Swimming Level: Bottom Dweller
- Schooling Fish: Yes
- Why Choose Threestripe Corydoras?
✔ Beautiful reticulated spotted pattern
✔ Peaceful community fish
✔ Active bottom-dwelling scavenger
✔ Perfect for planted aquariums
✔ Hardy and beginner friendly
✔ Excellent alternative to True Julii Corys
Aquarium Setup
Threestripe Corydoras thrive in mature aquariums with soft substrate, stable water conditions, and plenty of cover.
Recommended setup:
- 20 gallons minimum
- Fine sand or smooth gravel
- Live plants
- Driftwood and caves
- Gentle filtration
- Stable water parameters
- Groups of 6 or more
Fine sand is highly recommended because it protects their sensitive barbels and encourages natural foraging behavior.
Diet & Feeding
Threestripe Corydoras are omnivores and readily accept:
- Sinking pellets
- Corydoras wafers
- Frozen bloodworms
- Brine shrimp
- Daphnia
- Blackworms
- Live foods
- Quality sinking foods
Although they help consume leftover food, they should be fed directly to ensure optimal health.
Tank Mates
Threestripe Corydoras do well with:
- Tetras
- Rasboras
- Danios
- Guppies
- Gouramis
- Dwarf Cichlids
- Angelfish
- Shrimp
- Mystery Snails
- Other Corydoras species
Avoid aggressive fish and rough substrates.
Schooling Behavior
Threestripe Corydoras are highly social fish and should always be kept in groups.
Recommended group sizes:
- Minimum: 6 fish
- Ideal: 8–12+ fish
Larger groups help reduce stress and encourage natural schooling behavior.
Frequently Asked Questions
How many Threestripe Corydoras should I keep?
A minimum group of six is recommended, though larger groups are preferred.
Are Threestripe Corydoras the same as Julii Corydoras?
No. While they look similar, Corydoras trilineatus displays a more reticulated, maze-like pattern, while True Julii Corydoras have more distinct spots.
Do Threestripe Corydoras help keep the tank clean?
Yes. They scavenge uneaten food from the substrate but still require a proper diet.
Are they safe with shrimp and snails?
Absolutely. They are peaceful and safe with shrimp, snails, and other community fish.
What substrate is best?
Fine sand is ideal, though smooth gravel also works well.
Available at Tropical Treasures Wyo
Shop healthy Threestripe Corydoras (Corydoras trilineatus) at Tropical Treasures Wyo in Cheyenne, Wyoming. These peaceful freshwater catfish are perfect for planted aquariums, community tanks, shrimp setups, and hobbyists looking for an active and attractive bottom-dwelling fish.
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