Bronze Corydoras Tank Mates

Corydoras catfish are peaceful, sociable bottom-dwellers — one of the easiest fish to find tank mates for.

They occupy the floor, ask nothing of mid-water fish, and clear the engine against almost every peaceful community species. The few cautions are temperature edges and very large or aggressive tankmates. Keep them in a group of six or more on smooth sand or rounded gravel that protects their barbels.

Bronze Corydoras key facts

The sourced figures the engine uses to judge Bronze Corydoras pairings.

Top Bronze Corydoras tank mates

A ranked shortlist: the species the engine clears with Bronze Corydoras and that suit its size and temperament best — tap a name for its care guide, or use + Add to test the pairing in the planner.

No tank mates match these filters — try removing one. Reset filters

Other engine-cleared options (not necessarily ideal)

These clear TankStocking's hard welfare checks with Bronze Corydoras, but are larger, bolder, or otherwise less ideal than the shortlist above — read up before committing.

Possible with care

These can work, but the engine flags something to watch — read the reason before you commit.

• Betta (Siamese Fighting Fish) — Territorial
• Paradise Fish — Aggression
• Cockatoo Dwarf Cichlid (Apisto Cacatuoides) — Territorial
• Convict Cichlid — Aggression
• Jewel Cichlid — Aggression
• Kribensis (Rainbow Krib) — Territorial
• Golden Wonder Killifish (Striped Panchax) — Aggression
• Molly (Common / Sailfin) — Heavily stocked
• Rainbow Shark — Aggression
• Redtail Black Shark — Aggression
• Pictus Catfish — Aggression

Best avoided

A hard welfare check fires for each of these — don't mix them with Bronze Corydoras.

• Chocolate Gourami — Temperature clash, Species-only fish
• Kissing Gourami — Predation risk
• Licorice Gourami — Species-only fish
• Snakeskin Gourami — Predation risk
• Bala Shark — Predation risk
• Tinfoil Barb — Predation risk
• Discus — Temperature clash
• Electric Blue Acara — Predation risk
• Firemouth Cichlid — Predation risk, Territorial
• German Blue Ram — Temperature clash
• Green Severum — Predation risk
• Multifasciatus Shell-Dweller — Territorial, Species-only fish
• Oscar — Predation risk, Aggression
• Common Goldfish — Coldwater + tropical

Keeping Bronze Corydoras well: the detail

Beyond the table — the behaviour, the parameters that actually move the needle, and the mistakes that cost fish. Hobbyist context, not a verdict; the planner above is what judges your plan.

Water parameters in practice

Bronze cories are unfussy on chemistry — neutral to slightly soft or hard, 22–26 °C — but they are fussy about substrate. Smooth sand or rounded gravel is non-negotiable: sharp grains wear away the barbels they use to forage, and an eroded-barbel cory is a starving one. Keep the bottom clean, because that is where they live and feed.

Why Bronze Corydoras behaves the way it does

Corydoras are armoured, shoaling catfish from the soft-bottomed streams and shallows of South America, where they sift sand for food in groups, never alone. The shoaling is safety behaviour, and the constant sifting is how they eat — both explain why a single cory or a pair sits hidden and anxious. They also gulp air at the surface, a normal adaptation to low-oxygen water, not a sign of distress.

Common Bronze Corydoras stocking mistakes

The first mistake is sharp gravel, which quietly destroys their barbels over months. The second is too small a group — fewer than six leaves them shy and inactive. The third is assuming they are a "clean-up crew" that lives on leftovers; they are a fish that needs its own sinking food, not the scraps the others miss.

Early signs something is wrong

Worn-down or missing barbels, a cory that rests with clamped fins, and reddened patches on the belly are the substrate-and-hygiene warning signs. Frantic, repeated dashes to the surface beyond their normal air-gulping suggest poor water quality. A healthy cory group forages busily across the bottom and rests in company, not hidden alone.

How tank size changes the answer

Six is the minimum and they want 20 gallons of floor to forage across. A longer tank beats a taller one — bronze cories use the bottom, so footprint is what counts. Bigger groups of eight or ten in a 29-gallon-plus are noticeably bolder and busier, and they pair naturally with a mid-water school above them.

Bronze Corydoras community ideas

Each build is scored by the same engine as the planner — tap one to load it.

Common questions

More on Bronze Corydoras

Related guides on TankStocking — each scored by the same welfare engine as the planner.

Compatibility is a planning estimate: individual temperament, tank layout, and group sizes all matter. Cycle the tank, add fish gradually, and watch how they behave. See the methodology or browse the full freshwater fish list.