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Penguin tetra (Thayeria obliqua) — Characidae

Penguin tetra

Thayeria obliqua
Family: Characidae

The Penguin tetra (Thayeria obliqua) is a freshwater fish of the family Characidae that grows up to 8 cm.

Length
7.6 cm
Water
Freshwater
Diet
Omnivore
Behaviour
Schooling
Activity
Diurnal
Body shape
Torpedo-shaped
Substrate
Open water
Danger
Harmless
Range
South America: Brazil, Peru
Edibility
Commonly eaten

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Description

The penguin tetra is a small South American characin (Characidae) from fresh water of the Amazon basin. The species grows to about 8 cm and has a slender, silvery body with a striking black stripe running obliquely over the flank to the lower tail lobe. Characteristically it swims with its head tilted upward. As a schooling fish it swims in quiet forest streams and snaps at small invertebrates, insects and plant material. The fish is harmless to humans and is popular in the aquarium trade.

Frequently asked questions

How do you recognise the Penguin tetra?

The Penguin tetra has a torpedo-shaped body, is mainly silver-grey and shows a horizontal stripes pattern.

Where does the Penguin tetra live?

The Penguin tetra lives in fresh water and is mostly found around open water. South America: Brazil, Peru

How big does the Penguin tetra get?

The Penguin tetra grows to a maximum of about 8 cm.

Is the Penguin tetra dangerous to humans?

No, the Penguin 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.

Is the Penguin tetra edible?

Yes, the Penguin tetra is commonly eaten.

More photos

Penguin tetra (Thayeria obliqua) — Characidae — 2
© President and Fellows of Harvard College (CC BY-NC 4.0) via GBIF — MCZ
Penguin tetra (Thayeria obliqua) — Characidae — 3
iNaturalist ((c) OmniProgWalrus, some rights reserved (CC BY-NC))
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All data

Identification

English name
Penguin tetra sourced
Scientific name
Thayeria obliqua
Family
Characidae
Other names
Penguinfish; Penguin fish verified

Appearance

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

Habitat & distribution

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

Behaviour & biology

Diet
Omnivore inferred
Diet (detail)
Invertebrates, algae and detritus inferred
Social behaviour
Schooling sourced
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

Edibility
Commonly eaten inferred
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 Thayeria

More from the family Characidae

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