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Description
Corydoras Acutus BlacktopCorydoras acutus (Blacktop Corydoras) Sleek, active cory for established peaceful community aquariums Quick Facts Size: ~56 cm Tank size: 50L+ recommended Difficulty: Moderate Temperament: Peaceful Best kept: Groups (5+) Plant safe: Yes Is this for you? Good if: You want a slightly more unique corydoras species You have an established, stable aquarium You keep peaceful community fish You are comfortable maintaining water quality Avoid if: Your tank is
Corydoras acutus (Blacktop Corydoras)
Sleek, active cory for established peaceful community aquariums
Quick Facts
- Size: ~5–6 cm
- Tank size: 50L+ recommended
- Difficulty: 🟡 Moderate
- Temperament: Peaceful
- Best kept: Groups (5+)
- Plant safe: Yes
Is this for you?
✔️ Good if:
- You want a slightly more unique corydoras species
- You have an established, stable aquarium
- You keep peaceful community fish
- You are comfortable maintaining water quality
❌ Avoid if:
- Your tank is newly set up or unstable
- You want a low-effort “clean-up fish”
- You plan to keep just one
- You keep aggressive or highly competitive fish
Why this fish?
Corydoras acutus is a more refined and less commonly seen corydoras species, valued for its sleek body shape and subtle contrast markings.
It offers the same peaceful nature and bottom-level activity as other corys, but is better suited to hobbyists with stable setups.
Common mistakes
- Adding them to immature tanks → higher stress and losses
- Keeping them alone instead of in a group
- Assuming they survive on leftover food
- Keeping them with aggressive or fast feeders
- Neglecting water quality stability
Care made simple
- Temperature: 22–26°C
- Diet: Sinking pellets, wafers, frozen foods
- Group size: 5+ recommended
- Substrate: Soft sand preferred
- Water: Clean, stable, well-maintained
Pair with
- Sinking cory pellets or wafers
- Fine sand substrate
- Driftwood and plants
- Peaceful tetra, rasbora, or nano fish
NTA Insight:
Compared to common corydoras, this species benefits more from stable water conditions. Most issues come from immature tanks rather than the fish itself.
Compared to common corydoras, this species benefits more from stable water conditions. Most issues come from immature tanks rather than the fish itself.
FAQ
Is this a beginner fish?
It can be, but only in an established tank. It is less forgiving than common corydoras.
Can I keep just one?
No. Corydoras are social fish and should be kept in groups of at least 5.
Do they clean the tank?
No. They forage for food but still require proper feeding.
Do they need sand?
Soft sand is preferred to protect their barbels, though smooth substrate can also work.
What do they eat?
Sinking pellets, wafers, and frozen foods like bloodworms or brine shrimp.
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Exchange/Return Notes
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4.1 ★★★★★
Based on 8 reviews
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Product Reviews
★★★★★ 2
Destroyed in under 10 minutes
Size: 9 in, Color: Large Bone
I bought 2 of these toys, one for my 9 year old great dane who isn't an aggressive chewer, and one for my 6 month old puppy who is average.
In less than 10 minutes both were destroyed and my dane managed to swallow a good chunk.
I wasn't surprised when they both had small holes on the ends and started pulling the stuffing out. The stuffing and squeakers were confiscated immediately, but I let them keep chewing. By the time I came back from throwing the insides away, both dogs had chewed the toys in half and my dane swallowed a chunk when he saw me coming. The puppy was going to do the same thing, but luckily we're working on his "drop" command so he was excited enough for the bigger payout and dropped it.
They didn't just come apart at the seams, the whole toy ripped in half making it too easy to swallow. Neither of them are aggressive cheers and the toys didn't hold up at all. A stuffed animal toy would have lasted longer (and has any time I've allowed it). 10 minutes of playtime is probably too generous , but I'm trying to be fair. If I hadn't been right there watching them, they both would have been able to swallow the whole thing in minutes. Definitely not safe for any amount of actual chewing.
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Reviewed in the United States on November 14, 2025
★★★★★ 5
The perfect teething toy for a puppy of any size - apparently indestructible!
Size: 9 in, Color: Large Bone, Size: 9 in, Color: Large Bone
I ordered this product for an overly excitable, destructive corgi chihuahua mix puppy, who was teething. He was a foster and managed to destroy, almost immediately, every toy I had on-hand for him, and toys I picked up at the local pet store. I was very concerned he'd swallow parts of toys, which can lead to fatal intestinal blockages, not to mention extremely high vet bills which I couldn't cover as a simple foster mom. When it arrived, I crossed my fingers that the "Seam Protection - doubled-stitched seams with heavy duty thread" would actually add "extra durability." And I was NOT disappointed! The bone shape of the toy would probably fit comfortably in the mouth of any dog or puppy, as you can see from photo #4. What's coolest about the shape of this toy is the pup can sink all of his or her teeth into it, providing comfort for the entire mouth and not just a few teeth or only one section of its mouth at a time. I was much more experienced as a kitten foster mom, and had had similar difficulties finding teething toys for kittens. This toy is thin and light weight enough that I imagine it could provide relief for little kitten mouths, also, but I didn't get to find out, as my little foster pup chose this as his #1 favorite toy and brought it with him to his forever home. I wanted to know how long it would take before he'd destroy it, though (picture 5 he'd had this Dura-Fused bone toy for a few hours short of one week, and the last photo - you'll see he'd not even undone a small portion of the seam!) Overall I would highly recommend this product for teething babies of almost any species. As far as I could tell it is indestructible. Almost seven days of constant gnawing and he'd not even taken one stitch out, created any tear or rip, let alone, gotten close to being able to swallow the squeaker (always a fear!). I imagine months later, he's still been unsuccessful at ripping/tearing this toy at all. I'd gladly buy again should I foster any dog or puppy - the company lives up to its moniker, Ethical Products, because they've produced a no-frills and apparently indestructible squeak toy which I'd have no fears of leaving with a teething puppy unsupervised. Highly recommended!
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Reviewed in the United States on November 28, 2020
★★★★★ 3
Good tug toy
Size: 15 in, Color: Retriever
I have a doberman that shready everything in 2.5 seconds. This lasted a few days so was impressed for the cost. Would buy again as he really liked it.
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Reviewed in the United States on December 28, 2025
★★★★★ 5
My dog’s new favorite
Size: 8 in, Color: Squirrel
didn’t expect much for the price but my dog actually loves this thing. It’s tough enough to hold up to regular chewing and the leather gives it a nice texture that’s different from the usual plush toys. He carries it around like it’s his prize. It’s not indestructible and if your dog is a heavy shredder it probably won’t last forever but for moderate chewers it holds up way better than a lot of toys I’ve tried. Definitely worth grabbing again.
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Reviewed in the United States on July 19, 2025
★★★★★ 4
Not for gnawers
Size: 11.5 in, Color: Bear
I was hoping this would work for my teenage ACD and save my leather goods from being chewed on.
He gnawed on it quietly I was thrilled. But I had to take it from him within a few minutes. Gnawing apparently equals chewing pieces off.
Not made for chewers or gnawers.
It seemed to be well made, was soft, was actually a fairly good size and didn’t get gross when it got spitty. Just didn’t work out for Captain chaos destructor of all.
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Reviewed in the United States on May 4, 2026
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