Snow White Gold Fin Dragon Male Betta (Betta splendens)

Choose a white dragon betta with gold-edged fins

The Snow White Gold Fin Dragon is a white dragon betta: a male Siamese fighting fish, Betta splendens, from an ornamental line bred for colour. In the trade, “dragon” describes bettas with a heavy, opaque, metallic-looking layer over the scales that gives the body a solid, armoured look. In this form that layer is snowy white, and the fins fade from white towards gold at their edges. Like all ornamental bettas he is a captive-bred, domesticated fish.

Seriously Fish gives the wild species a native range in central Thailand, from Chiang Rai province in the north to Surat Thani and Phang Nga in the south, and says records from the Mekong basin, Laos, Vietnam and Cambodia refer to other species or introduced fish; FishBase still describes the range as the Mekong basin. Wild fish live in still or sluggish water such as rice paddies, swamps, ditches and ponds, often shaded and sometimes low in oxygen. FishBase lists the wild species as Vulnerable on the IUCN Red List (assessed 2011).

Decide from the complete care picture

Compare him with other males in our betta fish collection or the male Betta splendens category. Our guide to betta colours and tail types explains the names used in the hobby.

Know what one purchase supplies

One purchase quantity supplies one live male betta in our single standard size. Ornamental bettas vary from fish to fish: fin shape, fin length and the amount of gold differ, so the photographs show the colour form, not the individual you will receive and not a confirmed tail type. Some gallery images are representative and none shows the exact fish supplied.

Plan for his adult size from day one

• Adult size: about 7 cm (OATA); Seriously Fish gives 70 mm standard length and FishBase 6.5 cm total length.
• Sex: male. Males are more colourful and carry longer fins than females.
• Quantity: one male per aquarium. If you buy two males, you need two separate aquariums.

Have the aquarium running, heated and mature before you order, and check our delivery and Live Arrival Guarantee information for dispatch days. Setting up first means he goes straight into stable, warm water instead of waiting in a bag or a cold tank.

Plan the aquarium for one male betta

The sources differ on minimum size. OATA’s UK care sheet gives at least 20 litres for a single male and advises buying as large as possible; Seriously Fish recommends a base of at least 45 × 30 cm, about 41 litres, for a single male or a pair, and opposes keeping bettas in tiny aquariums or jars. FishBase also advises against very small containers. We treat 20 litres as the absolute minimum and recommend 40 litres or more where you have room, because a larger volume holds temperature and water quality more steadily.

Run a three-step set-up check

1. Heat: a thermostatic heater sized for the tank, checked with a separate thermometer.
2. Filter: a filter is always essential (OATA), but with gentle flow; Seriously Fish suggests an air-powered sponge filter.
3. Cover: a lid with an air gap above the water, because bettas jump and breathe air at the surface.

Our tank volume calculator turns your tank’s dimensions into litres, so you can size the heater and filter correctly. Seriously Fish suggests a filter rated at about 80–125 litres per hour and a heater of roughly 50–100 W for its recommended tank.

Furnish a calm, planted, covered tank

Bettas breathe air. Like other anabantoids they have a labyrinth organ, an expansion of the upper part of the first gill arch lined with folded, blood-rich flaps, which lets them take oxygen from air gulped at the surface. Seriously Fish advises keeping the tank well covered but not filled to the top, so the fish can reach the warm, humid air above the water, and warns that bettas are excellent jumpers.

Divide the tank by function

Seriously Fish recommends a well-planted, shaded aquarium with plenty of surface cover: tall stem plants, floating plants such as Salvinia or Riccia, and Cryptocoryne, with driftwood carrying Java fern or Java moss. Choose smooth décor: long fins tear on sharp edges and rough plastic plants. A healthy male may build a bubble nest at the surface; Seriously Fish describes this as the male’s part in breeding, and it is no cause for concern.

Hold a steady temperature and stable water

Bettas are tropical fish and need a heater in a UK home. OATA gives a range of 20–28°C, Seriously Fish 22–30°C and FishBase 24–30°C. We recommend a steady 26–28°C, which sits inside the 24–28°C band that all three sources accept. Our betta temperature guide explains how to set and check the heater through the seasons.

Separate habitat values from waste readings

Seriously Fish notes that wild-collected bettas probably prefer softer, more acidic water of pH 5.0–7.0, but ornamental strains such as this one do well across pH 6.0–8.0, which covers most UK tap water. Check your supply with our water matcher and keep conditions stable rather than chasing an exact number.

Filter gently and maintain weekly

A betta tank needs biological filtration like any other, but long fins and a slow swimmer mean the flow must stay gentle. Seriously Fish advises avoiding strong currents. If he is pushed around by the outflow or rests in corners to escape it, baffle the outlet or turn the flow down.

Follow a weekly maintenance sequence

1. Test ammonia, nitrite, nitrate, pH and hardness once a week, as OATA recommends.
2. Change 25% of the water at least once a week.
3. Treat the new water with tap-water conditioner and bring it to the tank’s temperature.
4. Siphon uneaten food and waste from the substrate.
5. Rinse filter sponges in removed tank water, never under the tap.
6. Check the heater and thermometer agree before you put the lid back.

Small tanks change quickly: a few uneaten pellets in 20 litres raise ammonia faster than in a large aquarium, and a heater fault cools a small tank faster. This is the main practical reason we recommend a larger aquarium where possible.

Feed one measured meal a day

Wild bettas eat small invertebrates: Seriously Fish mentions aquatic and terrestrial invertebrates, and FishBase lists zooplankton and mosquito and other insect larvae. In the aquarium, OATA recommends a good-quality flake or pellet, ideally a specialised betta pellet, with occasional small live or frozen foods.

Build one measured meal

• Staple: betta pellets or a good flake, once a day.
• Variety: daphnia, brine shrimp or small bloodworm a few times a week, for colour and condition.
• Amount: only what he eats within a few minutes, as OATA advises.
• Leftovers: remove anything uneaten, because it fouls a small tank quickly.

Seriously Fish warns that bettas are prone to obesity. A betta will usually keep eating if you keep feeding, so judge by his body, not his appetite: the belly should be gently rounded after feeding, never bloated.

Introduce him calmly

Acclimatise him with the floating-bag method OATA recommends, with the tank lights off, and do not leave him in the transport bag longer than necessary. Release him into a mature, heated aquarium with ammonia and nitrite at zero. Expect him to explore and possibly hide for a day before he starts to display.

Use a first-week checkpoint plan

OATA lists the signs of a healthy betta: clear, bright eyes, undamaged fins, intact scales, no ulcers or bumps, normal swimming and steady breathing.

Watch fins, scales and behaviour

Long fins are the first place problems show. Torn edges usually mean sharp décor or a nipping tank mate; ragged, receding or discoloured edges point to poor water and possible fin rot, which our guide to fin rot treatment explains.

Pair each observation with an action

Seriously Fish describes opercular flaring, spreading the gill covers, as a betta’s typical aggressive display. Brief flaring is normal; constant flaring is stressful and usually has a visible cause.

Keep one male per aquarium

Two male bettas must never share an aquarium. OATA warns that they will fight until one is severely injured or killed. Seriously Fish adds that ornamental strains are more aggressive than other Betta species and that usually only one individual can be kept per tank, with males and females kept apart except for breeding. OATA notes that a male kept with at least five females needs a densely planted tank and is not recommended for inexperienced keepers.

Prevent fights before they start

• Never place two male tanks where the fish can see each other all day.
• If you keep several males, give each one his own heated, filtered aquarium.
• Keep female bettas, including our Dragon Halfmoon Female Betta, in their own group tank, not with him.

Breeding is a separate project. Seriously Fish describes how the male builds a bubble nest, collects the eggs after spawning and guards them; the eggs hatch in 24–48 hours and the fry stay in the nest for three to four days. Only attempt it with a planned set-up for the female’s safety and for rearing the young.

Choose tank mates with great caution

OATA says males should be kept alone or with very placid tank mates, because they are often subject to fin nipping. Seriously Fish goes further: it does not recommend B. splendens for the standard community aquarium, suggests that some small cyprinids and loaches from similar habitats may be suitable after research, and says fish with trailing or showy fins should be avoided because a male may treat them as rivals.

Check suits and avoid before you add anyone

No tank mate is guaranteed safe, because every male has his own temperament; watch any new companion closely for the first few days and have a plan to separate them. Our betta tank mates guide discusses safer choices, and the tank mates tool checks a mix against water needs.

Understand the dragon betta and its history

Bettas have been kept and bred for centuries. A genomic study by Kwon and colleagues (2022) notes reports of fighting-fish breeding in Thailand as early as the 14th century and ornamental breeding from the early 20th century. The same study found that 76% of the ornamental bettas sampled (28 of 37) carry ancestry from other Betta species, mostly B. mahachaiensis and B. imbellis, and that genes flow in the other direction too, which is one reason Seriously Fish warns that ornamental releases threaten the genetic integrity of wild populations.

Metallic and iridescent colouring has a genetic basis that researchers are only now mapping: Kwon and colleagues found that a gene called alkal2l likely corresponds to what breeders call the “spread iridocyte” gene. “Snow White Gold Fin Dragon” itself is a trade name for a colour form rather than a fixed show standard, so expect variation between fish.

Compare related dragon and metallic males

If you like the white dragon betta look, compare him with the Snow Dragon Plakat Male Betta, a short-finned plakat form, the Dragon Scale Halfmoon Male Betta Mix and the metallic Halfmoon Platinum Male Betta. For a full introduction to keeping any betta, read our betta care guide.

Answer white dragon betta buying questions

Can two male bettas live together?

No. OATA warns that two males will fight until one is severely injured or killed, so keep one male per aquarium.

What temperature does a betta need?

We recommend a steady 26–28°C, held by a thermostatic heater and checked with a separate thermometer. OATA gives 20–28°C, Seriously Fish 22–30°C and FishBase 24–30°C.

How big a tank does a male betta need?

At least 20 litres, according to OATA. Seriously Fish recommends a 45 × 30 cm base, about 41 litres, and we recommend 40 litres or more where possible.

Does a betta need a filter?

Yes. OATA says a filter is always essential. Keep the flow gentle, for example with an air-powered sponge filter, because long fins make strong currents hard work.

What is a dragon betta?

A trade name for ornamental Betta splendens with a heavy, opaque, metallic-looking layer over the scales. This Snow White Gold Fin Dragon has white scaling and fins that fade to gold at the edges.

What should I feed a male betta?

Betta pellets or a good flake once a day, with daphnia, brine shrimp or small bloodworm a few times a week. Give only what he eats within a few minutes, as bettas overeat easily.

Can a betta live with other fish?

Sometimes, but living alone is the safest choice. OATA advises only very placid tank mates; avoid fin-nippers, other bettas and any fish with long or showy fins.

How big does a betta get?

About 7 cm, according to OATA. Seriously Fish gives 70 mm standard length and FishBase 6.5 cm total length.

Consult the care references

• OATA: How to look after Siamese fighting fish (bettas) — UK care-sheet tank size, temperature, water-quality limits, feeding, compatibility and health signs.
• Seriously Fish: Betta splendens — natural range and habitat, adult size, aquarium base, décor, water values, diet, behaviour, labyrinth organ and breeding.
• FishBase: Betta splendens — family, environment values, distribution, maximum length, diet and IUCN status.
• Kwon et al. (2022): Genomic consequences of domestication of the Siamese fighting fish — domestication history, hybrid ancestry of ornamental bettas and colour genetics.