Spotted Corydoras

Corydoras melanistius

Photo of aquarium fish Spotted Corydoras
Natural range
  • Guyana area
  • Suriname area
  • French Guiana area
  • Guiana Shield area
CorydorasConservation status: Least concern LC

Family:Callichthyidae

Other scientific names: Corydoras wotroi

Corydoras melanistius, also known as the Spotted Corydoras or Black Sail Corydoras, belongs to the family Callichthyidae. These fish are native to northeastern South America, specifically the coastal regions of Guyana, Suriname, and French Guiana. Their natural habitat includes slow-flowing waters, ponds, backwaters, and tributaries of larger rivers. It is important to note that despite inhabiting coastal areas, this species is not adapted to brackish or saltwater.

Required aquarium volume
50 L
Size in aquarium
5 – 6 cm
Temperature
22 – 26 °C
Temperament
Peaceful (regular)
Parameters
Temperature22 – 26 °C
Water pHSlightly acidic (6) – Neutral (7)
Water dHVery soft (2) – Hard (15)
Water salinityno salt (freshwater)
Size in aquarium5 – 6 cm
Lifespan5 years
TemperamentPeaceful (regular)
Toward small fishnot a predator
Required aquarium volume50 L
Lightingdimmed or moderate
Substratesandy (regular, light)
Water flowweak or moderate
FeedingSinking (any)
CareSmall group (3–4 individuals)

Frequently asked questions

The essentials: size, tank volume, water parameters and care

How big does Spotted Corydoras get?

An adult reaches 5–6 cm in length. Plan the tank around the maximum size: the fish quickly outgrows a cramped setup.

What size aquarium does Spotted Corydoras need?

The minimum recommended volume is 50 L. A smaller tank speeds up nitrate build-up and raises stress levels.

What water parameters does Spotted Corydoras need?

Temperature 22–26 °C, pH 6–7, hardness 2–15 dGH. Stability matters more than exact values: sudden swings are harder on the fish than a small deviation from the ideal.

How long does Spotted Corydoras live?

Around 5 years when kept properly. Lifespan depends directly on tank volume, water quality and a varied diet.

Is Spotted Corydoras aggressive?

Temperament: peaceful (regular). Keep this in mind when choosing tank mates.

How many Spotted Corydoras should be kept together?

Recommended setup: small group (3–4 individuals). Ignoring this is a common cause of stress and disease.

What does Spotted Corydoras eat?

Diet type: sinking (any). Feed small portions that are finished within a couple of minutes — overfeeding does more harm than underfeeding.

What is the scientific name of Spotted Corydoras?

The scientific name of the species is Corydoras melanistius, family Callichthyidae. It also appears in the literature as: Corydoras wotroi.

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