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Glass headstander (Charax pauciradiatus) — Characidae

Glass headstander

Charax pauciradiatus
Family: Characidae
LC · Least Concern

The Glass headstander (Charax pauciradiatus) is a freshwater fish of the family Characidae that grows up to 10 cm.

Length
10.1 cm
Water
Freshwater
Diet
Carnivore
Behaviour
Schooling
Activity
Diurnal
Body shape
Torpedo-shaped
Substrate
Algae or seagrass meadow
Danger
Harmless
Range
Fresh water of northern and central South America, in slow-moving, densely vegetated water of rivers and swamps.
Edibility
Not eaten

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Description

The glass headstander is a translucent, deep characin of the family Characidae (true tetras) reaching about 10 cm. The strongly compressed, almost transparent body has a humped back and an adipose fin (as in many characins); the species often swims at an angle with its head down, a posture that helps it search for prey among plants. It comes from northern and central South America and lives in schools in slow, densely vegetated water of rivers and swamps. As a small predator it hunts insects, zooplankton and small invertebrates. In the rainy season it spawns among the water plants. For its transparency and behaviour it occasionally appears in the aquarium hobby.

Frequently asked questions

How do you recognise the Glass headstander?

The Glass headstander has a torpedo-shaped body, is mainly silver-grey and shows a plain pattern. Translucent, deep-bodied small tetra with a humped back; often swims at an angle with the head down and has an adipose fin.

Where does the Glass headstander live?

The Glass headstander lives in fresh water and is mostly found around algae or seagrass beds. Fresh water of northern and central South America, in slow-moving, densely vegetated water of rivers and swamps.

How big does the Glass headstander get?

The Glass headstander grows to a maximum of about 10 cm.

Is the Glass headstander dangerous to humans?

No, the Glass headstander is harmless to humans. None required: this species is harmless to humans.

Is the Glass headstander edible?

The Glass headstander is not usually eaten.

More photos

Glass headstander (Charax pauciradiatus) — Characidae — 2
Wikimedia Commons — J. PFLIGER (CC BY 4.0)
Fin

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All data

Identification

English name
Glass headstander verified
Scientific name
Charax pauciradiatus
Family
Characidae

Appearance

Size class
Small verified
Max length (cm)
10.1 verified
Body shape
Torpedo-shaped sourced
Dominant colour
Silver / grey sourced
Pattern
Plain sourced
Tail shape
Forked inferred
Mouth position
Terminal inferred
Lips
Thin inferred
Barbels
No verified
Dorsal fins
One continuous sourced
Dorsal spines
No verified

Habitat & distribution

Water type
Freshwater verified
Substrate
Algae or seagrass meadow verified
Natural range
Fresh water of northern and central South America, in slow-moving, densely vegetated water of rivers and swamps. verified
Origin
Native verified

Behaviour & biology

Diet
Carnivore verified
Diet (detail)
Insects, zooplankton and small invertebrates sourced
Social behaviour
Schooling verified
Territorial
No verified
Activity
Diurnal inferred
Reproduction
Separate sexes verified
Sexual dimorphism
No verified
Seasonality
Spawns in the rainy season among aquatic plants; eggs and larvae drift in open water. sourced
Special features
Translucent, deep-bodied small tetra with a humped back; often swims at an angle with the head down and has an adipose fin. sourced

For anglers

Edibility
Not eaten verified
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 verified
First aid
None required: this species is harmless to humans. sourced

Status & sources

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

Same genus Charax

More from the family Characidae

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