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Blacksail corydoras (Corydoras melanistius) — Callichthyidae

Blacksail corydoras

Corydoras melanistius
LC · Least Concern

The Blacksail corydoras (Corydoras melanistius) is a freshwater fish of the family Callichthyidae that grows up to 5 cm.

Length
5.1 cm
Water
Freshwater
Diet
Omnivore
Behaviour
Schooling
Activity
Nocturnal
Body shape
Elongated (eel-like)
Substrate
Sand / mud bottom
Danger
Can cause injury
Range
The north of South America, in the Guianas and adjacent basins.
Edibility
Not eaten

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Description

The blacksail corydoras is a small armoured catfish of the family Callichthyidae from northern South America. The species reaches only about 5 cm and has a body covered, instead of scales, with two rows of bony plates; characteristic are a dark eye-band and a black blotch at the dorsal-fin base. Around the downward-pointing mouth it bears barbels with which it searches sand and silt for worms, crustaceans, insects and plant matter. It lives in schools on the bottom. The pectoral and dorsal fin spines are sharp and mildly venomous and can deliver a painful sting when handled carelessly.

Frequently asked questions

How do you recognise the Blacksail corydoras?

The Blacksail corydoras has an elongate, eel-like body, is mainly silver-grey and shows a spots pattern. Small armoured bottom fish with a dark eye band and a dorsal blotch; sharp, mildly venomous fin spines.

Where does the Blacksail corydoras live?

The Blacksail corydoras lives in fresh water and is mostly found around sand or mud bottom. The north of South America, in the Guianas and adjacent basins.

How big does the Blacksail corydoras get?

The Blacksail corydoras grows to a maximum of about 5 cm. On average the species is around 4 cm.

Is the Blacksail corydoras dangerous to humans?

The Blacksail corydoras can cause injury; handle it with care. The pectoral and dorsal fin spines are sharp and mildly venomous; a sting gives a painful, burning wound. Hold the fish carefully, immerse the wound in warm water if needed and clean and disinfect it.

Is the Blacksail corydoras edible?

The Blacksail corydoras is not usually eaten.

More photos

Blacksail corydoras (Corydoras melanistius) — Callichthyidae — 2
Mark Allen (CC0 1.0) via GBIF — NHMUK
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All data

Identification

English name
Blacksail corydoras verified
Scientific name
Corydoras melanistius
Family
Callichthyidae
Other names
Blackspotted corydoras; Black-spotted corydoras; Bluespotted corydoras; Dotted corydoras; Guiana corydoras; Spotted catfish verified

Appearance

Size class
Small verified
Max length (cm)
5.1 verified
Average length (cm)
3.5 verified
Body shape
Elongated (eel-like) sourced
Dominant colour
Silver / grey inferred
Pattern
Spots inferred
Tail shape
Forked inferred
Mouth position
Inferior (downward) inferred
Lips
Thick / fleshy inferred
Barbels
Yes sourced
Dorsal fins
One continuous inferred
Dorsal spines
Yes sourced

Habitat & distribution

Water type
Freshwater sourced
Substrate
Sand / mud bottom sourced
Natural range
The north of South America, in the Guianas and adjacent basins. inferred
Origin
Native sourced

Behaviour & biology

Diet
Omnivore sourced
Diet (detail)
Worms, crustaceans, insects and plant material sourced
Social behaviour
Schooling inferred
Territorial
No inferred
Activity
Nocturnal inferred
Reproduction
Separate sexes sourced
Sexual dimorphism
No inferred
Seasonality
Present year-round in its habitat; no pronounced seasonality known. inferred
Special features
Small armoured bottom fish with a dark eye band and a dorsal blotch; sharp, mildly venomous fin spines. sourced

For anglers

Edibility
Not eaten sourced
Fishing method
Not a target species for angling; at most an incidental catch or usable as baitfish. inferred
Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Can cause injury sourced
First aid
The pectoral and dorsal fin spines are sharp and mildly venomous; a sting gives a painful, burning wound. Hold the fish carefully, immerse the wound in warm water if needed and clean and disinfect it. sourced

Status & sources

Sources
FishBase via GBIF (DwC-A), CC-BY-NC 4.0

Same genus Corydoras

More from the family Callichthyidae

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