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Species profile

Elegant Corydoras

Gastrodermus elegans

Common names: Elegant Corydoras, Elegant Cory, Gastrodermus elegans

Recognized speciesCorydoras
Elegant Corydoras (Gastrodermus elegans)

Adult size

Up to 5.5 cm

Typical adult length 4–5.5 cm.

Up to 5.5 cm

Countries of origin

  • See all stock from Brazil
  • See all stock from Colombia
  • See all stock from Peru

Good fit for your tank?

Good fit for

  • A mature peaceful aquarium with a sizeable shoal
  • A keeper interested in lower-water hovering behaviour
  • A calm community with small midwater fish

Think carefully if

  • The fish would be kept in a tiny group
  • Large or aggressive tank mates may suppress natural behaviour
  • You expect every trade form called elegans to be identical

Elegant Corydoras is a peaceful South American callichthyid catfish recognised by a fine mottled or banded pattern with noticeable sexual differences and more frequent midwater swimming than most corys. It should be kept in a same-species group over fine sand in clean, oxygen-rich freshwater.

Appearance and Identification

A slender, large-eyed cory with a pale grey to beige body and a dark horizontal stripe or series of blotches along the flank. Several pattern forms occur, and adults have a lighter, more delicate build than typical Bronze or Peppered Corydoras.

Identify this profile by the combination of a fine mottled or banded pattern with noticeable sexual differences and more frequent midwater swimming than most corys. Older sources commonly list this fish as Corydoras elegans; the current profile follows the accepted or revised placement Gastrodermus elegans. Colour alone can be unreliable in stressed, juvenile, or poorly conditioned fish, so body shape, snout length, fin pattern, and provenance should also be checked.

Females are usually broader and fuller through the abdomen, while males remain slimmer. Colour and pattern overlap strongly between the sexes, so body shape in mature fish is the safer guide.

Tank Requirements

Suggested filter
About 300–380 litres an hour
Suggested heater
About 75–125 W for this tank
Minimum tank volume
75 litres
Minimum tank length
75 cm
Minimum group size
6
Recommended group size
8
Activity level
Active
Flow preference
Moderate
Planting preference
Moderately planted
Hiding places
Yes
Lid recommended
Yes
Jumping risk
Low

Keep a sizeable group in a mature aquarium with fine sand, gentle open swimming room above the bottom, plants or wood for cover and consistently clean, oxygen-rich water. These fish may spend more time away from the substrate than many corys, so avoid crowding the lower and middle levels.

Behaviour and Tankmates

A peaceful, coordinated shoaling fish that often uses the lower and middle water as well as the substrate. A small group can appear nervous or inactive, while a larger group shows more natural hovering, darting and foraging behaviour.

Keep at least 6 of the same species or coded population, with 8 or more preferred where space permits. A mixed collection of single corys does not fully replace a proper same-species group.

It is not territorial. Males may briefly chase one another or follow females during courtship, but sustained aggression is unusual when the group has adequate floor space.

Works best with small, peaceful midwater fish and other gentle bottom species. Avoid aggressive or highly competitive tank mates, and do not assume dwarf shrimp young will be safe from opportunistic feeding.

Check tankmates for this species

Water Parameters

Temperature
22–27 °C
pH
5.5–7.5
GH
1–12
KH
0–6
TDS
30–220
Stability importance
Important

Soft to moderately hard, slightly acidic to neutral water is suitable. Provide good oxygenation and keep ammonia and nitrite at zero.

Parameter caveat
Acclimate slowly to changes in temperature, pH, and conductivity. Corydoradine catfish periodically gulp atmospheric air, so the water surface must remain accessible. Warm water holds less oxygen and requires stronger aeration.

Feeding

Diet types
Insectivore, Omnivore, Scavenger
Feeding frequency
Daily
Preferred foods
  • Quality sinking catfish pelletUse a small sinking pellet or wafer as a staple. Feed enough for every fish to reach food after faster midwater fish have eaten.
  • Frozen or live daphnia and cyclopsSmall crustacean prey supports natural foraging and is useful for conditioning breeding groups.
  • Frozen bloodworm, black mosquito larvae, or tubifexOffer clean, appropriately sized portions in rotation rather than as the only food.
  • Soft vegetable-based waferProvides dietary variety, although these catfish are not algae-eating cleanup animals and still require protein-rich food.

Use small sinking or slow-falling foods, including quality micro-pellets, wafers and varied frozen or live invertebrate foods. Feed across more than one area because these fish may take food in the lower water as well as from the substrate.

Feed after faster surface and midwater fish have taken their share, and confirm that every individual reaches food. Use small portions once or twice daily, remove persistent leftovers, and vary prepared and frozen or live foods.

Breeding

Breeding type
Egg Layer
Breeding difficulty
Moderate
Breeding temperature
24 °C
Breeding pH
6.5
Brood or egg count
Usually 40 to 150 adhesive eggs.
Incubation
4 days
Parental care
None
Baby foods
  • Newly hatched brine shrimpA primary growth food after fry have absorbed the yolk sac; feed small rinsed portions several times daily.
  • MicrowormsUseful for newly feeding fry that remain close to the substrate.
  • Vinegar eels or cultured infusoriaHelpful for the smallest species and uneven broods during the first feeding stage.
  • Fine powdered fry foodUse sparingly as a supplement and siphon uneaten material to protect water quality.

Captive spawning is reported less often than for common corys. A well-conditioned group, excellent water quality and seasonal-style changes may help, but egg production and fry survival can be inconsistent; the adults do not provide parental care.

Habitat and Origin

Geographic origin
Amazon Basin, Brazil, Colombia, Peru, South America
Natural habitat
Freshwater River, Freshwater Stream, Sand/Mud Substrate
Aquarium contexts
Breeding Aquarium, Freshwater Aquarium, Freshwater Community, Planted Aquarium
Audience level
Intermediate

Classification

Profile type
Recognized species
Genus
Gastrodermus
Family
Callichthyidae
Species group
Corydoras, Fish
Previous scientific names
Corydoras elegans, Name supplied in older aquarium literature or trade usage. The current profile uses Gastrodermus elegans under the revised Corydoradinae classification.

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