Furry Diary

Not furry, but we like them anyway.

Silvertip Tetra

Hasemania nana

Also called Copper tetra, Tetragonopterus nanus (historic name), Hasemania marginata (historic name)

SpeciesShort profile

From South America: the Rio São Francisco basin in Minas Gerais, Brazil123

At a glance the quick version

Length3.8 to 5 cm123
Sizesmall
Lively and colourful
Adaptable, captive-bred and beginner-friendly
Mixes well in a general community tank
2

Looks how to spot one

Small scaled characin (tetra) without an adipose fin

A compact little tetra with a warm coppery-gold body and a dark line running along the rear half of the flank. The tips of the fins are marked with bright silvery-white, which gives the fish its name. Males show richer colour and are slimmer than females.23

Colourscopper to golden bodysilvery-white fin tipsdark rear body stripe23

Personality what they are like

A bright, busy and peaceful tetra that fits in well with most small community fish. In a proper group its playful energy is spread among its own kind.21

Daily activity how busy a day looks

Very lively; it spends the day darting around the middle of the tank with its shoal and enjoys room to swim.2

Grooming and care the hands-on bits

Easy to look after: clean, stable water with routine partial water changes. Captive-bred stock copes with a broad range of water chemistry.21

Home where they are happiest

Tank of at least 60 x 38 x 30 cm (about 68 litres) for a small shoal. Water 22-28 °C, pH 6.0-8.0, hardness 5-20 °H. A planted tank with open swimming space suits it.21

Food basics what goes in the bowl

Takes most foods readily. Feed small dried flakes and granules together with regular small live or frozen foods such as bloodworm, Daphnia and brine shrimp for best colour.21

Company who they like around

Keep at least 6, ideally 10 or more. Good companions are livebearers, danios, rasboras, other small tetras, Corydoras, gouramis and dwarf cichlids; avoid large predatory fish.21

The story where it all began

Lütken described this fish in 1875 as Tetragonopterus nanus. It was later placed in the genus Hasemania, and a 1938 description by Meinken as Hasemania marginata turned out to be the same species. Today the fish sold in shops are captive-bred.31

Fun facts for the dinner table

  1. 1

    Unlike most tetras, Hasemania species have no adipose fin, the small fleshy fin between the dorsal fin and tail.2

  2. 2

    The species name nana means small or dwarf.3

  3. 3

    Its eggs hatch about a day and a half after spawning.3

  4. 4

    A genome sequence for the species, 16,581 base pairs long, was published in 2013.3

Recognised by the official bits

IUCN Red List
Least Concern (assessed 7 November 2018)1
FishBase
Used commercially in the aquarium trade1

The care rhythm Furry Diary remembers it for you

A typical home-care rhythm for a Silvertip Tetra. It is our own starting plan, not a vet's advice, and you can change every line in the app.

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Where this comes from

Every breed page shows where each fact comes from. If we got something wrong, sorry, we are pet people, not a science magazine. Tell us at [email protected] and we will fix it.

  1. FishBase species summary: Hasemania nana fishbase.seused for describer, maximum length, distribution, water range, IUCN status
  2. Seriously Fish species profile: Hasemania nana seriouslyfish.comused for aquarium care, water parameters, behaviour, diet, sexing, habitat
  3. Wikipedia: Hasemania nana en.wikipedia.orgused for taxonomy history, etymology, appearance

Checked 2026-09-30. Text is written in our own words from these sources.