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Blackanal hemiodus (Hemiodus atranalis) — Hemiodontidae

Blackanal hemiodus

Hemiodus atranalis
Family: Hemiodontidae

The Blackanal hemiodus (Hemiodus atranalis) is a freshwater fish of the family Hemiodontidae that grows up to 20 cm.

Length
20 cm
Water
Freshwater
Behaviour
Schooling
Body shape
Torpedo-shaped
Substrate
Open water
Danger
Harmless
Range
South America: Brazil, Guyana, Peru

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Description

The blackanal hemiodus is a South American characin (Hemiodontidae) from fresh water of the Amazon and Orinoco basins. The species grows to about 20 cm and has a slender, streamlined, silvery body with a dark blotch on the flank that runs into a stripe to the lower tail lobe. As a fast, schooling fish it swims in clear rivers and snaps at algae, detritus, insects and plant material. The fish is harmless to humans.

Frequently asked questions

How do you recognise the Blackanal hemiodus?

The Blackanal hemiodus has a torpedo-shaped body and is mainly silver-grey.

Where does the Blackanal hemiodus live?

The Blackanal hemiodus lives in fresh water and is mostly found around open water. South America: Brazil, Guyana, Peru

How big does the Blackanal hemiodus get?

The Blackanal hemiodus grows to a maximum of about 20 cm.

Is the Blackanal hemiodus dangerous to humans?

No, the Blackanal hemiodus 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.

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All data

Identification

English name
Blackanal hemiodus sourced
Scientific name
Hemiodus atranalis
Family
Hemiodontidae
Other names
Wide halftooth characin sourced

Appearance

Size class
Medium verified
Max length (cm)
20.0 verified
Body shape
Torpedo-shaped sourced
Dominant colour
Silver / grey sourced
Tail shape
Forked inferred

Habitat & distribution

Water type
Freshwater sourced
Substrate
Open water sourced
Natural range
South America: Brazil, Guyana, Peru sourced
Origin
Native inferred

Behaviour & biology

Social behaviour
Schooling sourced
Territorial
No inferred
Reproduction
Separate sexes inferred
Sexual dimorphism
No inferred
Seasonality
Present year-round in its habitat; no pronounced seasonality known. inferred

For anglers

Fishing method
Can be caught with natural bait or lures, matched to the size and habitat of the species. inferred
Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Harmless verified
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 Hemiodus

More from the family Hemiodontidae

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