Penguin Tetra (Thayeria boehlkei)

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Penguin Tetra

Penguin Tetra

Thayeria boehlkei

57 Litres (15 US G.)

5.1-7.6cm (2-3 ")




6.0 - 8.0

23 -27 °C (73.4-80.6°F)

5-19 °d

2:3 M:F

Pellet Foods
Flake Foods
Live Foods

5-8 years



Additional names

Penguin Tetra, Penguin Fish, Hockey Stick Tetra, Blackline Penguinfish


Females are larger and have thicker bodies than males when mature.

Tank compatibility[edit]

A shoaling fish that must be kept in groups of 6 or more. Do not keep with predatory fish. Can be kept with similar sized shoaling fish, can also be nippy and shouldn't be kept with slower long finned fish.


Will take most foods including pellets and flakes as well as live/frozen food such as brine shrimp and daphnia.

Feeding regime[edit]

Feed once or twice a day.

Environment specifics[edit]

They need a spacious tank with lots of open swimming space. Some hiding places in tall plants is appreciated. They are sensitive to high nitrate levels.


They have been seen to bond with the Black Neon Tetras, shoaling together. They swim with occasional hopping motion, with the tail down a few degrees. The lower rear fin colouring intensifying this behaviour.


This fish has a grey/silver elongated body with a thick black horizontal stripe, which extends from the head to the tip of the bottom half of the tail, in a 'hockey stick' design.


External links[edit]