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Magdalena rivulus (Cynodonichthys magdalenae) — Rivulidae

Magdalena rivulus

Cynodonichthys magdalenae
Family: Rivulidae
NE · Not Evaluated

The Magdalena rivulus (Cynodonichthys magdalenae) is a freshwater fish of the family Rivulidae that grows up to 7 cm.

Length
7 cm
Water
Freshwater
Diet
Carnivore
Behaviour
Small groups
Activity
Diurnal
Body shape
Elongated (eel-like)
Substrate
Mixed bottom
Danger
Harmless
Range
Northwestern South America
Edibility
Not eaten

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Description

The Magdalena rivulus is a small killifish from fresh water of northwestern South America, in the Magdalena basin of Colombia. The species grows to about 7 cm and has a slender, elongate body; males have fine red spots and accents, while females are an inconspicuous brown with a tail eyespot. It lives in small forest pools and streams and can make short jumps over moist ground. It feeds on small invertebrates and insect larvae. The fish appears in the aquarium hobby. The IUCN has not evaluated the species.

Frequently asked questions

How do you recognise the Magdalena rivulus?

The Magdalena rivulus has an elongate, eel-like body, is mainly red-orange and shows a spots pattern. Makes leaps across damp ground; small forest pool killifish

Where does the Magdalena rivulus live?

The Magdalena rivulus lives in fresh water and is mostly found around mixed bottom. Northwestern South America

How big does the Magdalena rivulus get?

The Magdalena rivulus grows to a maximum of about 7 cm.

Is the Magdalena rivulus dangerous to humans?

No, the Magdalena rivulus is harmless to humans. This species is harmless to humans. No specific first aid is needed. Still handle the fish with care: mind the fin rays and the sharp edges of the gill cover, and rinse any scratch with clean water and cover it. For a dirty or deep wound check tetanus status.

Is the Magdalena rivulus edible?

The Magdalena rivulus is not usually eaten.

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All data

Identification

English name
Magdalena rivulus verified
Scientific name
Cynodonichthys magdalenae
Family
Rivulidae

Appearance

Size class
Small verified
Max length (cm)
7.0 verified
Body shape
Elongated (eel-like) sourced
Dominant colour
Red / orange inferred
Pattern
Spots sourced
Tail shape
Rounded inferred
Mouth position
Superior (upward) sourced
Lips
Thin sourced
Barbels
No sourced
Dorsal fins
One continuous sourced
Dorsal spines
No sourced

Habitat & distribution

Water type
Freshwater sourced
Substrate
Mixed bottom sourced
Natural range
Northwestern South America verified
Origin
Native verified

Behaviour & biology

Diet
Carnivore sourced
Diet (detail)
Small invertebrates and insect larvae inferred
Social behaviour
Small groups sourced
Territorial
No sourced
Activity
Diurnal sourced
Reproduction
Separate sexes sourced
Sexual dimorphism
Yes sourced
Seasonality
Forest-pool killifish; present year-round. sourced
Special features
Makes leaps across damp ground; small forest pool killifish 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
Harmless sourced
First aid
This species is harmless to humans. No specific first aid is needed. Still handle the fish with care: mind the fin rays and the sharp edges of the gill cover, and rinse any scratch with clean water and cover it. For a dirty or deep wound check tetanus status. verified

Status & sources

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

Same genus Cynodonichthys

More from the family Rivulidae

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