Red Veiltail Male Betta (Betta splendens)

Choose the Red Veiltail Male Betta for classic flowing fins

The Red Veiltail Male Betta is the fighting fish most people picture when they hear the word betta: a male Betta splendens coloured a deep, solid red from nose to fin tips, with long fins that flow and drape as he swims. The tail falls away behind him like a veil, the dorsal fin sweeps back over it, the anal fin runs long underneath and the slim pelvic fins hang below the head. When he flares at his reflection every fin opens at once and the whole fish seems to double in size.

The veiltail is the oldest of the long-finned forms and still one of the most graceful. Seriously Fish lists it among the ornamental fin types alongside the halfmoon, crown tail, delta and plakat. Because his fins are long and heavy, a veiltail does best in a calm tank with gentle flow, smooth décor and resting places near the surface. Give him those and he is a hardy, characterful fish that soon learns to recognise the person who feeds him.

He must live as the only male in his tank. OATA warns that two males kept together will fight until one is severely injured or killed, and Seriously Fish describes the species as unsuitable for the standard community aquarium. Plan the tank around him and he will be its centrepiece.

Check the fit before you order

See every male and female in our betta fish range, open the labyrinth fish and betta category, or compare other long-finned males on our Betta splendens male page. Our betta fish buying guide is a good place to start if this is your first.

Tell the veiltail from the other fin forms

Every ornamental betta is the same species, and the names you see in shops describe fin shape and colour rather than different animals. Seriously Fish lists veiltail, plakat, halfmoon, halfmoon plakat, crown tail, delta, super delta, round tail and twin tail among the established forms. Knowing the difference helps you choose the look you want and the care that goes with it.

Compare the forms side by side

If you like the veiltail shape but want another colour, compare the Veiltail Nemo Male Betta, the Veiltail Green Male Betta or the mixed-colour Veiltail Male Betta Mix. Our betta types guide shows each form in pictures.

Know where the species comes from

Wild Betta splendens comes from central Thailand, from Chiang Rai south to Surat Thani and Phang Nga according to Seriously Fish, and FishBase places it in the Mekong basin. It lives in still or slow water such as rice paddies, swamps, ditches and floodplain pools, often shaded and sometimes short of oxygen. The labyrinth organ above the gills lets it gulp air from the surface, which is how it survives there. Wild fish are short-finned and fairly drab; the long red fins of a veiltail are the product of generations of selective breeding. FishBase lists the wild species as Vulnerable.

Know what one purchase supplies

One purchase quantity supplies one live male Red Veiltail Betta in our Large size grade. The photographs show the colour form and fin type, not the individual fish you will receive. The shade of red, the length of the fins and small dark or blue tints in the fins vary from fish to fish, and colour deepens as he settles into a warm, clean tank.

Seriously Fish notes that the cheapest veiltail strains are mass-produced and can carry genetic defects, so watch a new male closely in his first weeks. Every fish is covered by our Live Arrival Guarantee. Read our delivery days and live arrival terms before ordering, and have the aquarium cycled and heated to 26°C first.

Prepare these before delivery day

• Tank and lid: 20 litres or more, covered, with a small air gap above the water.
• Heater and thermometer: set to 26–28°C and checked for a day before he arrives.
• Gentle filter: a sponge filter, or an internal filter with the outlet turned down or baffled.
• Soft décor: live plants, smooth wood and a resting leaf near the surface.
• Food: a betta granule and a frozen or live treat.

Plan the aquarium for long fins

OATA gives a minimum of 20 litres for one male and advises buying as large a tank as you reasonably can. Seriously Fish suggests a base of 45 × 30 cm, about 41 litres, and says plainly that tiny tanks and jars are not suitable. All three sources describe a fish of about 7 cm body length: 70 mm standard length from Seriously Fish, 6.5 cm total length from FishBase and about 7 cm from OATA.

For a veiltail the shape of the tank matters as much as the volume. A long, low tank keeps the surface within reach, so a male carrying heavy fins does not have to swim far for air. Avoid tall, narrow tanks, which force him to swim up a long column of water every time he breathes.

Use a three-step space check

1. Confirm the volume: measure the real litres with our tank volume calculator; 20 litres is the floor.
2. Check the height: 30–35 cm of water depth is plenty for a long-finned male.
3. Plan companions last: if you add any, enter them in our stocking calculator and size up the tank.

Furnish with soft cover and resting places

Seriously Fish recommends tall stem plants, floating plants such as Salvinia and Riccia, water lilies and Cryptocoryne, plus wood, clay pots or tubes for shelter and dried leaf litter on the floor. It also advises keeping the tank covered and not filled to the brim, because the fish need humid air above the surface and are good jumpers. OATA adds that a cover glass must leave a gap so the fish can reach the air.

For a veiltail, choose everything with his fins in mind. Live plants and smooth wood are kinder than hard plastic. Broad leaves close to the surface make natural hammocks where a long-finned male can rest without swimming. Our aquarium plants range includes floating plants, Anubias and Cryptocoryne, which suit the job.

Divide the tank by function

Hold the water warm and steady

A betta needs heated water all year round in the UK. The sources agree on pH, broadly agree on temperature and differ on hardness, so we work to the overlap. Stability matters more than an exact figure, so use a thermostatic heater and match the temperature of new water at every change.

Most UK tap water sits within these ranges once it is treated with a conditioner. Compare your own readings with our water matcher, read our water chemistry guide if the terms are new, and see our betta temperature guide for help choosing a heater.

Test both kinds of value

Temperature, pH and hardness describe what kind of water he prefers; ammonia, nitrite and nitrate tell you whether the water is clean. Test weekly and keep a simple record, so you notice a rising reading before the fish shows any sign.

Filter gently and keep the water clean

OATA says a filter is always essential and that bettas need a gentle current. Seriously Fish recommends a gentle air-powered sponge filter and advises against strong movement. For a veiltail this is the most important equipment choice in the tank: a male whose fins are pushed around by the current spends his energy fighting the water. Our guide to aquarium filtration explains the options.

Follow a weekly maintenance sequence

1. Check the temperature and test ammonia, nitrite and nitrate.
2. Change 25% of the water, as OATA recommends, siphoning waste from the floor.
3. Treat new water with conditioner and match the temperature within a degree.
4. Squeeze the sponge only in removed tank water, never under the tap.
5. Look over his fins in good light; small changes are easier to fix early.

Feed a measured diet and avoid bloating

In the wild, FishBase records zooplankton and insect larvae as the betta’s food. Seriously Fish says captive fish accept dried foods but should have regular small live or frozen foods for colour and condition, and it warns that bettas are particularly prone to obesity. OATA recommends a betta-specific pellet as the staple, with daphnia and small bloodworm as treats, fed once a day in an amount he finishes within a few minutes.

Build one measured meal

Settle him in over the first week

Add him only to a tank that has finished its nitrogen cycle; our guide to the aquarium nitrogen cycle shows how to check. Then use OATA’s floating bag method: switch off the lights, float the sealed bag for 10 minutes, add small amounts of tank water to the bag over up to 20 minutes, and release him without the bag water. Our guide to acclimatising new fish covers the same routine.

Use a first-week checkpoint plan

• Day 1: lights off, no food; let him find his resting spots.
• Day 2: a couple of granules; test ammonia and nitrite.
• Days 3–5: colour should deepen and fins should stay open as he settles.
• Day 7: full water test and first routine water change; a bubble nest means he feels at home.

Protect his fins from tank mates

Never keep two males together. Seriously Fish says bettas are not suited to the standard community tank and advises avoiding fish with trailing fins or a similar shape, which a male may see as a rival. OATA notes that males are often the victims of fin-nipping and do best alone or with very placid companions. With long red fins, a veiltail is an obvious target for nippers, so be strict. Read our betta tank mates guide and test any plan in our tank mates checker.

Screen companions with suits and avoid

Watch his fins and behaviour

A healthy veiltail swims slowly but steadily, eats eagerly, flares now and then and holds his fins spread. OATA lists the warning signs: hanging at the surface or lying on the bottom, colour darker or paler than normal, more hiding, faster or slower breathing, white spots, fluffy growths, lost fins or scales, weight change and poor appetite. Long fins show problems early, which is an advantage if you look closely each day.

Pair each observation with an action

Understand nests and breeding

Males build bubble nests at the surface, often under a floating leaf, and FishBase notes that they guard them. A nest shows a healthy, settled fish. Breeding needs a separate tank and a lot of planning. OATA describes a female showing vertical bars when ready, a courtship dance and eggs placed in the nest, after which the female must be removed because the male defends it fiercely. Eggs hatch in about a day according to OATA, or 24–48 hours according to Seriously Fish, and the fry stay in the nest for three to four days. Seriously Fish adds that breeders cover the tank tightly so the fry have humid air while the labyrinth organ develops.

Plan before you try

• Room: a breeding tank plus space to grow on and later separate the young males.
• First foods: infusoria, then microworm and newly hatched brine shrimp.
• Water: small, frequent water changes rather than large ones, as Seriously Fish advises.
• Background: our betta care guide covers the basics first.

Never release fish, plants or tank water

OATA reminds keepers that releasing aquarium animals or plants into the wild is illegal and usually fatal to the fish, and survivors can harm native wildlife. Under the Animal Welfare Act 2006 every pet owner has a duty of care. Dispose of old water and substrate down the drain or in household waste.

Answer Red Veiltail Betta buying questions

What is a red veiltail betta?

A male Siamese fighting fish, Betta splendens, of the veiltail fin form, coloured solid red. The veiltail has long, flowing fins, and the tail drapes downwards like a veil rather than spreading into a half circle. It is the classic betta most people picture.

How is a veiltail different from a halfmoon or crowntail?

A veiltail’s long tail hangs and drapes. A halfmoon’s tail is bred to open into a 180° D shape, and a crowntail’s fin rays extend beyond the webbing to give a spiky edge. Care is the same for all of them; only the fins differ.

How big does a red veiltail grow?

Seriously Fish gives 70 mm standard length, FishBase 6.5 cm total length and OATA about 7 cm. His long fins make him look much larger than the body measurement suggests.

What size tank does he need?

At least 20 litres for one male, as OATA advises, and ideally a 45 × 30 cm base of about 41 litres, as Seriously Fish recommends. Fit a heater, a gentle filter and a lid with a small air gap above the water.

Why does flow matter so much for a veiltail?

Long fins act like a sail. Seriously Fish advises avoiding strong water movement, and OATA asks for a gentle current. In strong flow a veiltail struggles to swim, tires quickly and may rest on the bottom or wedge himself behind décor.

Can a red veiltail live with other fish?

Never with another male betta. Avoid fin-nippers such as tiger barbs and serpae tetras, which target long fins, and other long-finned or brightly coloured fish he may treat as rivals. Calm bottom dwellers in a larger planted tank are the safest choice.

What temperature should the water be?

A steady 26–28°C, inside OATA’s 20–28°C, Seriously Fish’s 22–30°C and FishBase’s 24–30°C. UK rooms are far too cool for a betta, so a thermostatic heater is essential.

What should I feed him?

A betta pellet or granule once a day, only what he finishes in a couple of minutes, with small frozen or live foods such as daphnia and brine shrimp a few times a week. Seriously Fish warns that bettas are particularly prone to obesity.

Consult the care references

• OATA: How to look after Siamese fighting fish (bettas) — UK trade body care sheet: adult size, minimum tank, water values, filtration, feeding, compatibility, acclimatisation, warning signs, breeding and the air gap under the lid.
• Seriously Fish: Betta splendens (Siamese Fighting Fish) — native range and habitat, adult size, tank footprint, water values, flow, cover, diet and obesity risk, behaviour, fin forms, labyrinth organ and bubble-nest breeding.
• FishBase: Betta splendens, Siamese fighting fish — family, recorded maximum length, water values, habitat, air breathing, natural diet and conservation status.
• Tropical Fish Co betta fish buying guide, betta care guide and delivery terms — our own set-up, feeding and live arrival guidance.