What does the tuxedo pattern look like?

The tuxedo pattern features deep, dark iridescent flanks — typically black or dark blue — contrasting against a lighter head and dorsal area. The effect resembles formal evening wear, hence the name. The dark areas often show iridescent green or blue sheen under aquarium lighting.

Four is a good starter group. For the best social dynamics and to dilute male chasing, consider our 10-pack for better value. In a 4-pack, aim for 1 male and 3 females for the most harmonious group.

Will the tuxedo pattern breed true?

Yes — the tuxedo gene is dominant. When breeding tuxedo swordtails together, the vast majority of offspring will display the tuxedo pattern. This makes them one of the easier colour forms to maintain in a breeding colony.

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Xiphophorus hellerii

4x Tuxedo Swordtails – Xiphophorus Hellerii

Name: 4x Tuxedo Swordtails – Xiphophorus Hellerii
Brand: Tropical Fish Co
SKU: f94a4426-d397-407e-976e-b0e2b2e11553-1
Price: 18.39 GBP
Availability: InStock

Beginner Friendly

Peaceful

£18.39In Stock

Pack of 4 Tuxedo Swordtails (Xiphophorus hellerii) – elegant livebearers featuring the classic tuxedo pattern with dark, iridescent flanks contrasting against a lighter head and sword extension. A smart-looking swordtail variety that adds sophistication to any community aquarium.

Beginner FishCommunity FishLivebearerSwordtailTuxedo

Care at a Glance

Scientific Name

Xiphophorus hellerii

Adult Size

12 cm

Lifespan

5 years

Care Level

Easy

Temperament

Peaceful

Temperature

22–28°C

pH Range

7–8.5

Hardness

10–25 dGH

Minimum Tank

80L

Diet

Flakes, pellets, frozen foods, algae, vegetable matter

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Detailed care guides and support

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Acclimated

Properly quarantined and ready for your tank

Quick Care Guide

Temperature

22–28°C

pH Range

7–8.5

Minimum Tank

80L

Adult Size

12 cm

Lifespan

5 years

Care Level

Easy

Temperament

Peaceful

Diet

Flakes, pellets, frozen foods, algae, vegetable matter

Water Hardness

10–25 dGH

Tank Region

Middle

Water Parameters

Maintain these water conditions for optimal health and vibrant colors

Temperature

22–28°C

22°CIdeal Range28°C

pH Level

7–8.5

7Ideal Range8.5

Water Hardness

10–25 dGH

10 dGHIdeal Range25 dGH

Why Choose This Fish?

The Tuxedo Swordtail (Xiphophorus hellerii) is named for its distinctive two-tone pattern that resembles formal evening wear. The flanks are covered in deep, dark iridescent pigmentation — typically black or very dark blue — while the head, dorsal area, and sword tail extension display a contrasting lighter colour. The effect is striking and elegant, making tuxedo swordtails one of the most popular colour forms.

Care at a Glance

Scientific Name	Xiphophorus hellerii
Adult Size	10–12 cm
Temperature	22–28 °C
pH Range	7.0–8.5
Hardness	10–25 dGH
Minimum Tank	80 litres
Diet	Flakes, pellets, frozen foods, algae, vegetable matter
Temperament	Peaceful
Lifespan	3–5 years
Care Level	Easy

The Tuxedo Gene

The tuxedo pattern is produced by a specific gene that causes heavy melanin deposits across the flanks. This gene is dominant and stable, meaning it breeds true — offspring will display the tuxedo pattern. The intensity of the dark flanks can vary between individuals, with some showing near-black and others displaying dark blue or greenish iridescence.

Active Display Fish

Swordtails are among the most active livebearers. Males constantly display their elongated sword tail to females and rival males, creating engaging social interactions to observe. At 10–12 cm, they provide a substantial presence in the aquarium and are always on the move.

Tank Mates

Peaceful with all community fish. Compatible with other swordtails, platies, mollies, tetras, and corydoras. For better value, see our Tuxedo Swordtails 10 Pack. Also browse Green Wagtail Swordtails and Assorted Swordtails.