Brochis arcuata – A Comprehensive Guide (Skunk Cory)
The Skunk Cory, Brochis arcuata (formerly Corydoras arcuatus), is one of those fish that proves you don’t need crazy colors to stand out.
The bold stripes does all the work.
Running from the snout, across the back, and into the tail, that dark “skunk stripe” gives this fish a super clean, recognizable look that you can spot instantly across the tank.
It’s simple—but it’s sharp.
And when you get a group of them moving together, it looks even better.
Origin & Habitat
This species comes from the upper Amazon basin, including regions in Peru and surrounding areas.
In the wild, they’re found in:
- Slow-moving tributaries
- Flooded forest areas
- Sandy or fine substrates
Typical conditions include:
- Warm water
- Soft, slightly acidic parameters
- Leaf litter and submerged wood
Very standard Amazonian bottom-dweller habitat.
Size
- Adult Size: ~2 to 2.5 inches
- Body Type: Slightly more elongated than typical corys
They’ve got a bit of a sleeker profile compared to chunkier species.
Tank Size
- Minimum Tank Size: 20 gallons
- Recommended: 20–30 gallons
Like all corys:
- Floor space matters
- Group size matters more than individual stocking
Water Parameters
- Temperature: 73–79°F
- pH: 6.0–7.2
- Hardness: Soft to moderately soft
They do best in:
- Clean, stable water
- Slightly softer conditions
Temperament
- Peaceful
- Social
- Non-aggressive
They should always be kept in groups.
Group size
- Minimum: 6
- Ideal: 8–12
In proper groups:
- They’re more active
- Less shy
- Much more visible
Tank Setup
This is where they really pop visually.
Ideal setup
- Fine sand substrate
- Driftwood
- Plants or botanicals
- Moderate lighting
How to make them stand out
That stripe looks best when:
- The substrate is lighter
- There’s contrast in the tank
- Lighting isn’t overly harsh
In the right setup, the stripe becomes very defined and clean.
Diet
Very easy to feed.
Staple foods
- Sinking pellets
- Bottom feeder wafers
For best condition
- Frozen foods (bloodworms, brine shrimp)
- Live foods when possible
As always:
Don’t rely on leftovers
Tank Mates
Great community fish.
Good tank mates
- Tetras
- Rasboras
- Pencilfish
- Dwarf cichlids
- Other peaceful species
Avoid
- Aggressive fish
- Large predators
- Highly competitive bottom feeders
Behavior
- Bottom-dwelling
- Constant foraging
- Social group activity
They’ll:
- Move together
- Sift the substrate
- Rest in groups
Very classic cory behavior—with a more streamlined look.
Breeding
Similar to other cory-type species.
Spawning basics
- Egg layers
- No parental care
- Eggs placed on glass, plants, or decor
To trigger spawning:
- Clean water
- Heavy feeding
- Slight temperature drops
Why They’re So Popular
Simple:
That stripe.
- Clean, recognizable pattern
- Looks great in groups
- Easy to care for
They’re one of the few corys where the pattern alone makes them stand out across the room.
Final Thoughts
If you want:
- A visually clean, recognizable cory
- Easy care
- A fish that looks great in groups
The Skunk Cory is a no-brainer.
It’s simple—but it’s one of the best-looking “simple” fish you can keep.
Looking to Add Fish to Your Aquarium?
If you're looking to add new fish to your aquarium, we recommend purchasing from trusted retailers known for their healthy livestock and excellent selection. The Wet Spot Tropical Fish has one of the best selections of rare and high-quality freshwater fish in the hobby, with excellent shipping and consistently healthy stock. Moonlight Aquatics is another fantastic source, especially for uncommon species and great prices on unique fish you don’t see everywhere. If you’re looking to add shrimp to your tanks, Buy Pet Shrimp specializes in hardy, well-bred freshwater shrimp that ship safely and arrive in great condition.
Use our affiliate links and discount codes to save a little:
The Wet Spot Tropical Fish
https://geni.us/WCZYWC
Use code steenfott10 for 10% off
Moonlight Aquatics
https://geni.us/pAFf1s
Use code steenfott10 for 10% off
Buy Pet Shrimp
https://geni.us/RNkIQpf
Use code steenfott5 for 5% off
Your support helps us continue creating guides and content for the aquarium hobby.