Orces's cory
Corydoras orcesi
Also known as Bonita cory, Corydoras pastazensis orcesi
Care at a glance
- Temperature
- 73–81°F (23–27°C)
- pH
- 5.8–7.2
- Adult size
- 2.4 in (6 cm)
- Minimum tank
- 20 gal (75 L)
- Temperament
- Peaceful
- Social behavior
- Shoaling
- Swim level
- Bottom
- Difficulty
- Medium
- Breeding
- No record
- Rarity
- Rare
- Origin
- Rio Tigre system, Amazonian lowlands of Ecuador
- Family
- Callichthyidae
Overview
A shoal of six wants 75 liters with deep sand for its snout. Feeding is standard cory fare: sinking granules and frozen foods. Ecuadorian exports are few, so the fish is a rarity with no established breeding record. If you keep both this and the pastaza cory, house them separately to avoid mixed shoals of the two look-alikes.
In the wild
Orces's cory lives in the Rio Tigre system of lowland Ecuador, over sand in slow forest waters. It is a long-snouted forager that roots deep into soft bottoms. Keep it on a generous bed of fine sand with wood and litter at 23 to 27 degrees Celsius and pH 5.8 to 7.2.
Good to know
Weitzman and Nijssen described this fish in 1970 as a subspecies of Corydoras pastazensis, honoring the Ecuadorian zoologist Gustavo Orces. Most modern lists treat it as a full species, though not every authority agrees, and it is told from pastazensis by its cleaner body and differently cut mask. It reaches about 6 centimeters.
Did you know
It started scientific life as a footnote to the pastaza cory, a subspecies that later earned its own name, and careful keepers still get the two confused.
Tank mates
Orces's cory is a peaceful, shoaling species that keeps to the bottom. These picks match on water type, temperature, pH, size and temperament.

Cinnamon loach
Pangio pangiaFreshwater2.4 in (6 cm)20 gal (75 L)72–81°F (22–27°C)
Bronze cory
Osteogaster aeneaFreshwater3 in (7.5 cm)20 gal (75 L)70–81°F (21–27°C)
Barlow's dwarf cichlid
Apistogramma barlowiFreshwater3.1 in (8 cm)20 gal (75 L)73–82°F (23–28°C)
Cherry barb
Rohanella titteyaFreshwater2 in (5 cm)20 gal (75 L)72–81°F (22–27°C)
Dwarf flag cichlid
Laetacara curvicepsFreshwater2.2 in (5.5 cm)20 gal (75 L)68–82°F (20–28°C)
Clown pleco
Panaqolus maccusFreshwater3.5 in (9 cm)20 gal (75 L)73–82°F (23–28°C)
Common questions
What size tank does an Orces's cory need?
An Orces's cory needs at least 20 gal (75 L). It spends most of its time in the bottom.
What temperature and pH do Orces's cory need?
Orces's cory are comfortable at 73–81°F (23–27°C) with a pH of 5.8–7.2.
How big do Orces's cory get?
An adult Orces's cory reaches about 2.4 in (6 cm).
Do Orces's cory need a group?
Yes. Orces's cory are a shoaling species and should be kept in a group, not singly.
Where to buy
Some links may not be the exact species or variety.
…or ask your local fish store.
Appears in
Freshwater fish · Corydoras · Schooling fish · Community fish · Bottom dwellers
Keeping Orces's cory?
Track water tests, reminders and stocking fit.
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See how Orces's cory fits a stocking plan. Open the stocking calculator
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Related species

Northern longnose cory
Corydoras septentrionalisFreshwater2.4 in (6 cm)20 gal (75 L)75–82°F (24–28°C)
Punctatus cory
Corydoras punctatusFreshwater2.4 in (6 cm)16 gal (60 L)73–81°F (23–27°C)
Serratus cory
Corydoras serratusFreshwater2.4 in (6 cm)20 gal (75 L)77–84°F (25–29°C)
Simulatus cory
Corydoras simulatusFreshwater2.4 in (6 cm)20 gal (75 L)73–81°F (23–27°C)
Ourastigma cory
Corydoras ourastigmaFreshwater2.6 in (6.5 cm)20 gal (75 L)75–82°F (24–28°C)
Peru black cory
Corydoras semiaquilusFreshwater2.6 in (6.5 cm)24 gal (90 L)72–79°F (22–26°C)
