Penguin Tetra: The Fish That Swims at an Angle

In this guide

Overview

The penguin tetra carries a bold black horizontal stripe along a silvery body, similar in colouring to several other tetras, but its most distinctive trait is behavioural rather than visual: it habitually swims with its head tilted upward at a slight angle, a posture that gives it its penguin-referencing common name. It comes from the Amazon basin and reaches around five to six centimetres.

This angled swimming style is entirely normal for the species and not a sign of a swim bladder problem or illness, a distinction worth knowing since a new keeper unfamiliar with the fish might otherwise mistake it for a health issue.

Tank and water requirements

A group of six or more does well in a tank of sixty litres or more, with open swimming space in the upper and middle water column, where this species spends most of its time. It tolerates a reasonable range of water conditions, including typical Indian tap water.

A well-planted tank with some open water suits its active, mid-to-upper-level shoaling habits well.

Diet and behaviour

A varied diet of small flakes, micro pellets and occasional live or frozen food suits it well. It is peaceful and active, and generally an easy, low-maintenance addition to a community tank.

It shoals confidently in a proper group and is one of the more distinctive-looking, easy tetras for a keeper wanting something visually a little different from the classic neon or cardinal.

Buying tips

• Priced around twenty five to sixty rupees per fish in most Indian shops that stock tetras
• The angled swimming posture is entirely normal behaviour, not a health concern, worth mentioning to a new owner
• A hardy, easy tetra that offers visual variety without any real increase in care difficulty

Article content © Ravi Teja. All rights reserved.