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Glass tetra (Charax stenopterus) — Characidae

Glass tetra

Charax stenopterus
Family: Characidae

The Glass tetra (Charax stenopterus) is a freshwater fish of the family Characidae that grows up to 9 cm.

Length
9.4 cm
Water
Freshwater
Diet
Omnivore
Activity
Diurnal
Body shape
Torpedo-shaped
Substrate
Mixed bottom
Danger
Harmless
Range
South America: Argentina, Brazil, Paraguay, Uruguay

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Description

The glass tetra is a characin (Characidae) from fresh water of the La Plata basin in southern South America. The species grows to about 9 cm and has a deep, laterally compressed, partly translucent body with a forward-set mouth and a spot near the tail base; it often swims with its head tilted slightly down. As a small ambush predator it hunts small invertebrates and small fish among water plants. The fish is harmless to humans.

Frequently asked questions

How do you recognise the Glass tetra?

The Glass tetra has a torpedo-shaped body and is mainly silver-grey.

Where does the Glass tetra live?

The Glass tetra lives in fresh water and is mostly found around mixed bottom. South America: Argentina, Brazil, Paraguay, Uruguay

How big does the Glass tetra get?

The Glass tetra grows to a maximum of about 9 cm.

Is the Glass tetra dangerous to humans?

No, the Glass tetra 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.

More photos

Glass tetra (Charax stenopterus) — Characidae — 2
Wikimedia Commons — Menezes, Naércio A.; de Lucena, Carlos Alberto S. (CC BY 4.0)
Glass tetra (Charax stenopterus) — Characidae — 3
Wikimedia Commons — D. N. @ LIB (CC BY-SA 4.0)
Glass tetra (Charax stenopterus) — Characidae — 4
iNaturalist ((c) Francisco González Táboas, some rights reserved (CC BY-NC))
Glass tetra (Charax stenopterus) — Characidae — 5
Wikimedia Commons — Sebastián Gómez Barboza Silveira (CC0)
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All data

Identification

English name
Glass tetra sourced
Scientific name
Charax stenopterus
Family
Characidae
Other names
Glass headstander sourced

Appearance

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

Habitat & distribution

Water type
Freshwater sourced
Substrate
Mixed bottom sourced
Natural range
South America: Argentina, Brazil, Paraguay, Uruguay sourced
Origin
Native inferred

Behaviour & biology

Diet
Omnivore inferred
Diet (detail)
Invertebrates, algae and detritus inferred
Territorial
No inferred
Activity
Diurnal 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
Small in size and barely an angling target; mostly caught incidentally or as baitfish. 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 Charax

More from the family Characidae

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