Super Delta Female Betta (Betta splendens) - Random Mix

The Super Delta Female Betta is a domestic Betta splendens selected for a broad, flowing tail and the alert, individual character that makes bettas such engaging aquarium fish. This listing supplies one randomly selected female from a mixed-colour shipment. Colour, pattern, body tone, fin length and exact tail spread vary from fish to fish, so the female delivered may look different from every example in the gallery.

This is the supplier's XL trade grade. XL is a stock category, not a promise of an exact body length, age or show-standard tail. The species commonly reaches about 6-7 cm in total length, but the arrival size of an individual fish can vary. The customer-facing identity is Betta splendens; “Super Delta” describes a selectively bred fin form rather than a separate species.

For good long-term welfare, plan a heated, filtered and fully cycled aquarium with a lid, gentle flow, access to the water surface and plenty of plant cover. One female on her own is the lower-risk default. Female groups are not automatically peaceful and should only be attempted by experienced keepers with substantially more space, dense sight-line breaks and an immediate separation plan.

Super Delta Female Betta Care at a Glance

Care point	Practical guidance	Why it matters
Adult size	Usually around 6-7 cm total length	The supplier records up to 7 cm; individual size varies
Single-fish aquarium	20 litres is a welfare floor; 30-40 litres is easier to stabilise	More water volume gives greater temperature and water-quality stability
Routine temperature	23-27°C; aim for stable warmth rather than the edge of a range	This matches the shipment guidance and sits within established betta care ranges
pH	6.0-7.8, kept stable	Sudden change is more dangerous than a steady value within the range
General hardness	A practical target is about 4-12 dGH	OATA recommends soft-to-medium water for tank-reared bettas
Ammonia and nitrite	0 mg/L	Both are toxic and indicate an immature or overloaded biological filter
Diet	Quality betta pellet or flake with small live or frozen foods	Variety supports condition without relying on one rich food
Temperament	Territorial and individually variable	Female does not mean automatically peaceful or suitable for a group
Care level	Moderate	Success depends on cycling, stable heat, careful feeding and temperament-led stocking

Use our tank volume calculator before choosing equipment, and compare your tap-water results with the water parameter matcher. These tools help turn a labelled aquarium size into usable water volume and a realistic maintenance plan.

Important Gallery and Selection Information

Random selection is appropriate only when the customer is happy to receive natural variation. If a precise shade or pattern is essential to your aquarium plan, a random-mix listing is not the right product. Browse the female betta collection for separately listed forms, but always read each product's own selection notes before ordering.

What Does “Super Delta Female” Mean?

Super Delta is a domestic trade description for a betta with a broad fan-shaped caudal fin. It sits within the many colour and fin forms produced through selective breeding of Betta splendens. It is not a scientific name and does not identify a different wild species.

The International Betta Congress defines a Halfmoon against a full 180-degree show spread. This product is sold under the supplier's Super Delta trade label, but it is not advertised as an individually assessed exhibition fish. Tail angle, symmetry, branching, fin length and condition can differ between healthy females, especially in a mixed commercial shipment. A relaxed fish may also hold its fins differently from a displaying fish, so a single photograph cannot certify the final spread.

Female bettas usually have less exaggerated finnage than many long-finned males, although domestic females can still be colourful and broad-tailed. Sex should be assessed from several physical and behavioural features rather than tail length alone. The gallery renders cannot perform that assessment; the live shipment and supplier sex designation are the relevant evidence for this sale.

Species Identity, Origin and Natural Behaviour

Betta splendens is the accepted species name for the Siamese fighting fish. Eschmeyer's Catalog of Fishes places it in the family Osphronemidae and records its native freshwater range in the Mekong basin of Thailand and Cambodia. Modern aquarium strains are captive-bred domestic fish whose colours and fins can look very different from wild-type animals.

FishBase describes the species in standing floodplain waters, canals and rice paddies and records it as a facultative air-breather. The labyrinth organ allows a betta to take atmospheric air at the surface, but this adaptation does not remove the need for clean, oxygenated water or biological filtration. Surface access must remain open, and a lid should leave an air space above the water rather than sealing the surface against the fish.

Natural-history information is useful for designing the aquarium: warm stable water, modest flow, cover and easy surface access all suit the species. It should not be used to describe a domestic Super Delta female as wild-caught, locality-pure or identical to a wild fish. This listing makes none of those claims.

How Big a Tank Does One Female Betta Need?

OATA recommends at least 20 litres for one betta. Treat that as a floor, not a target to undercut. A 30-40 litre aquarium is usually easier to heat, filter and maintain because small mistakes are diluted through more water. A useful horizontal footprint also gives the fish room to patrol, rest and move away from its reflection.

A bowl, vase or unfiltered desktop ornament is not suitable long-term housing. Small containers change temperature quickly, collect waste quickly and provide little room for a filter or varied habitat. The ability to breathe air does not protect a betta from ammonia, nitrite, unstable pH or chronic cold.

Essential equipment

• Aquarium of at least 20 litres for one fish, with a secure lid
• Thermostatically controlled heater and a separate thermometer
• Mature biological filter adjusted to a gentle current
• Water conditioner for chlorine or chloramine
• Liquid tests for ammonia, nitrite, nitrate and pH
• Smooth substrate, plants and shelters without sharp edges
• A regular light-and-dark cycle

If the labelled tank size is close to the minimum, calculate the volume after allowing for substrate, decor and the gap below the lid. A nominal 20-litre aquarium may hold noticeably less water once furnished.

Temperature and Water Parameters

The supplier's guidance for this shipment is 23-27°C, pH 6.0-7.8 and up to 15 dGH. OATA gives a wider general range for tank-reared bettas, while FishBase records 24-30°C for the species. For everyday home care, keep this fish steadily within the supplier range rather than moving between the extremes of different references. Around 25-26°C is a practical centre point when the rest of the aquarium is compatible.

In most UK homes, a heater is needed throughout the year. Choose one appropriate to the actual water volume, position it where flow distributes heat, and verify it with a thermometer. Do not add hot water directly to correct a cold tank. Temperature changes during water changes and acclimation should be gradual.

Water-quality targets

Measure	Target	Action if outside target
Temperature	Stable 23-27°C	Check heater, thermometer and room draughts; correct gradually
pH	Stable 6.0-7.8	Investigate source water and buffering before using chemical adjusters
General hardness	Soft to medium, about 4-12 dGH	Match changes slowly; do not chase a number without testing source water
Ammonia	0 mg/L	Test again, stop adding livestock, change conditioned water and assess the filter
Nitrite	0 mg/L	Treat as a water-quality problem requiring prompt corrective action
Nitrate	No more than 20 mg/L above tap-water level	Review feeding, stocking, plant growth and water-change routine

Stable, suitable water is more important than forcing the pH or hardness to a fashionable exact value. Rapid chemical correction can be worse than a modest, steady reading inside the supported range. Test the tap water as well as the aquarium so that a change has context.

Cycling, Filtration and Flow

A new filter needs time and an ammonia source to establish bacteria that process fish waste. A tank is not ready merely because it has run for a fixed number of days; it is ready when testing shows that the biological filter can keep ammonia and nitrite at zero. Use the aquarium cycle tracker to record results instead of relying on appearance alone.

Bettas benefit from filtration but can struggle against a concentrated current, particularly broad-finned domestic forms. A sponge filter, baffled outlet or adjustable internal filter can provide biological activity without pushing the fish around the aquarium. Watch the fish: persistent avoidance of one side, difficulty holding position or being swept from resting places indicates that the flow needs adjustment.

Do not wash mature filter media under untreated tap water. During maintenance, lightly rinse it in removed aquarium water when necessary, preserving the bacterial community. Replace media only when its condition or manufacturer guidance genuinely requires it, and avoid replacing every biological component at once.

Plants, Cover and a Safe Layout

A good female betta aquarium offers open swimming routes alongside cover. Live plants, floating cover, smooth wood and broad leaves create visual shelter and resting points near the surface. Anubias, Java fern and other aquarium plants that tolerate gentle flow can work well when their own light and water needs are met.

Run a finger or a piece of fine fabric over artificial plants and ornaments before use. Rough seams and sharp openings can catch fins or scales. Caves must be large enough that the fish can turn and leave easily. Keep the heater protected and the filter intake appropriate for the fish's size.

A secure lid is important because bettas can jump. Leave accessible air above the surface, keep floating plants from forming an unbroken mat and avoid an exposed cold draught across the breathing space. Moderate lighting and shaded areas allow the fish to choose where it feels secure.

Can a Female Betta Live Alone?

Yes. A single female can live alone and does not need another betta for welfare. For most homes, one female in a well-furnished aquarium is the clearest and lower-risk plan. She can explore, feed and show normal resting and territorial behaviour without being required to negotiate a dominance hierarchy.

Female bettas are often described as calmer than males, but individual females still differ in boldness and aggression. Peer-reviewed research has documented stable dominance orders and attacks in small female groups. That evidence is why this listing does not call females peaceful, schooling fish or guaranteed community residents.

Normal behaviour can include patrolling, investigating the keeper, resting on leaves, taking air at the surface and brief flaring. Constant hiding, clamped fins, rapid breathing, repeated collision with glass or refusal to feed should prompt a check of water quality, temperature, flow, reflections and social stress.

Female Groups and Sorority Risk

A female group is an advanced project, not a beginner shortcut. It needs substantially more space than a single-fish aquarium, dense planting that breaks every long sight line, multiple feeding areas, close observation and separate heated accommodation ready before the fish meet. A group that looks quiet may still contain chronic intimidation, food exclusion or one fish hiding continuously.

Do not add two females together on the assumption that neither is male. Do not use the pair gallery illustration as husbandry evidence. If chasing, biting, persistent flaring, fin damage or food exclusion occurs, separate the fish promptly. The female betta buying guide explains these trade-offs in more detail.

Can This Female Betta Live With Other Fish?

Community success is possible in some aquariums, but no named tank mate is guaranteed. The betta's temperament, the other fish, tank footprint, feeding competition and available cover all matter. A larger, mature aquarium gives more options than the minimum single-fish setup.

Avoid other bettas by default, fin-nipping fish, boisterous feeders and conspicuous long-finned species that may provoke display or become targets. Small shrimp may be hunted. Even snails can be investigated or nipped by an individual fish. Community stocking must match temperature, water chemistry and available space as well as temperament.

Introduce cautiously, watch every animal and keep a separation plan. Do not judge compatibility from the first quiet hour. For a decision framework rather than a universal list, use the betta tank-mates guide and the tank-mates checker.

What Should a Super Delta Female Betta Eat?

OATA describes bettas as omnivorous. A quality betta pellet or fine flake can form the staple diet, supplemented with small portions of suitable frozen or live foods such as daphnia, small bloodworm or tubifex. FishBase records zooplankton and insect larvae in the natural diet, which helps explain the value of appropriately sized animal protein.

Feed a small amount once daily that the fish can finish within a few minutes, then remove obvious leftovers. Pellet sizes differ, so a universal number of pellets would be misleading. Watch body condition and waste rather than copying a fixed count from another brand's food.

Food type	Role	Use carefully because
Complete betta pellet or flake	Regular staple	Portion depends on product size and energy density
Daphnia or brine shrimp	Variety and enrichment	Use clean, appropriately sourced food in small portions
Small bloodworm or tubifex	Occasional variety	Rich food is not a complete everyday diet
Uneaten food	No benefit	It decomposes and increases the load on the filter

Temperature, appetite and digestion are connected, but appetite loss is not a reason to overheat the aquarium. Test the water, confirm the heater reading and observe other symptoms. Our betta food listing is one option; check the label and adjust the portion to the individual fish.

Weekly Maintenance

OATA strongly recommends a partial water change of about 25% at least weekly, alongside regular testing. The actual schedule may need adjustment for the aquarium's volume, feeding and nitrate trend. Replace removed water with conditioned water of a compatible temperature and chemistry.

1. Observe the fish before disturbing the aquarium: breathing, posture, fins, appetite and behaviour.
2. Test temperature, ammonia, nitrite, nitrate and pH; record unusual changes.
3. Siphon waste from accessible substrate without dismantling every hiding place.
4. Change an appropriate portion of water using conditioner and a close temperature match.
5. Check the filter flow and heater, cleaning media gently only when needed.
6. Inspect the lid, cables, plant growth and decor for new trapping or jumping risks.

A predictable routine is better than frequent full clean-outs. Do not replace all water, deep-clean the substrate and sterilise the filter at the same time; that can remove biological stability and expose the fish to abrupt changes.

Health Checks and When to Seek Help

A healthy female betta should have clear eyes, intact scales, steady breathing, controlled swimming and an appropriate interest in food. Fin edges and colour vary between individuals and can change with lighting, maturity and stress, so compare the fish with its own normal condition rather than the gallery.

Warning signs include clamped fins, white spots or unusual growth, damaged skin, rapid or laboured breathing, loss of balance, persistent surface distress, prolonged hiding, swelling, marked weight loss or a sudden change in aggression. Several different problems can produce the same sign. Test water and temperature first, isolate social stress where possible, and seek advice from a competent aquatic professional or fish-experienced veterinary practice rather than treating at random.

Do not add medicine “just in case”. Some products affect filters, invertebrates or oxygen levels, and an incorrect diagnosis can delay the right response. Keep a simple record of test results, food, maintenance and symptoms; it makes useful advice much easier.

Arrival and Acclimation

Prepare the aquarium before ordering: it should be cycled, heated, covered and tested. On delivery, keep the transport bag away from bright light and move through the acclimation process without unnecessary delay. Match temperature gradually, then introduce small amounts of aquarium water as described in our new-fish acclimation guide. The acclimation timer can help you pace the steps.

Avoid pouring transport water into the aquarium where practical. Leave the aquarium lights low, provide cover and observe the fish closely during the first week. Initial shyness or reduced colour can occur after transport, but persistent distress requires checks rather than assumptions.

Read the current delivery and Live Arrival Guarantee terms before choosing a delivery day. The guarantee applies to eligible livestock orders when its reporting and evidence requirements are followed; it is not a promise that every destination or circumstance is covered.

Breeding Is a Specialist Project

Betta splendens is a bubble-nesting species, but a male and female should not be kept together as an ordinary pair. Breeding involves conditioning, controlled introduction, close supervision, removal at the correct stage, protected fry space and suitable first foods. Courtship can become aggressive and injury is possible.

This randomly selected female is not sold as proven breeding stock, a matched pair or a fish with documented colour genetics. Do not infer her genotype from the gallery. Keepers planning to breed should use separate mature aquariums and specialist guidance rather than adapting the minimum home setup described for one female.

Super Delta Compared With Other Female Betta Forms

Trade form	Typical visual emphasis	What the label cannot guarantee
Super Delta female	Broad fan-shaped caudal below the idealised Halfmoon form	Exact tail angle, symmetry, colour or show grade
Halfmoon female	Very broad caudal form selected toward a Halfmoon outline	A full display angle without individual assessment
Plakat female	Shorter, more compact finnage	A calmer temperament or automatic community suitability
Crowntail female	Reduced webbing that creates visible ray extensions	Uniform ray reduction or exhibition quality
Double-tail female	Two caudal lobes and a different body/fin balance	Perfect lobe symmetry or a specific colour

Compare currently available alternatives rather than relying only on a form name: the Crowntail Female Betta, Halfmoon Female Betta mix, Plakat Female Betta mix and Double-tail Female Betta mix are distinct product pages. Availability can change, and each page's selection wording controls what is supplied.

Why Buy This Female Betta From Tropical Fish Co?

This page states the commercial boundaries before purchase: one randomly selected female, mixed colour and pattern, supplier XL trade grade, representative gallery and no show-grade promise. That is more useful than implying every fish will match one polished image.

Eligible livestock orders are covered by the current Live Arrival Guarantee when the published conditions are met. First-time customers can use WELCOME10 for 10% off their first order, subject to the active discount terms. Browse all bettas for sale if you want to compare sex, fin form, selection method and availability before checking out.

Product price and stock are shown in the live buy box rather than repeated in evergreen care text. This prevents old copy from contradicting the current Shopify variant. For exclusions or a problem on arrival, follow the instructions on the returns and guarantee page.

Evidence and Care Standards Used

This listing separates supplier facts, species-level science and practical UK husbandry guidance. The accepted name comes from Eschmeyer's Catalog of Fishes. Species biology and environmental context are cross-checked against FishBase. Aquarium care is anchored to the OATA betta care sheet and current UK fish-welfare guidance.

Domestic fin-form context is checked against the International Betta Congress standards. Female-group wording is deliberately cautious because published behavioural work reports dominance and aggression among female Betta splendens. None of these sources proves the exact appearance or temperament of an individual random-selection fish, which is why those features are not promised.

Frequently Asked Questions

What will I receive when I order this listing?

You receive one live Super Delta female Betta splendens per product quantity ordered. The fish is randomly selected from the healthy mixed-colour shipment available at dispatch.

Can I choose the colour or exact pattern?

No. This is a random mix, so red, blue, green, marble or any other colour is not guaranteed. Choose this listing only if individual variation is acceptable.

Is the fish in the gallery the exact fish I will receive?

No. All four images are representative illustrations. They help show a broad-finned domestic betta style but do not document the dispatched fish, its sex, colour, size or show quality.

Does the image with two bettas mean I receive a pair?

No. One product quantity means one female. The two-fish image is illustrative and is not evidence that two females can be safely housed together.

What does Super Delta mean?

Super Delta is a domestic fin-form trade description for a broad fan-shaped tail. It is not a species name and this random commercial fish is not certified to an exhibition tail angle.

How large is the XL female betta?

XL is the supplier's trade grade, not a fixed measurement. Betta splendens commonly reaches around 6-7 cm total length, but exact arrival length and age are not promised.

What is the minimum tank size for one female betta?

OATA recommends at least 20 litres for one betta. A 30-40 litre aquarium is generally easier to keep stable and gives more room for planting, cover and natural movement.

What temperature should I keep this betta at?

Use a heater to keep this shipment steadily within 23-27°C. Around 25-26°C is a practical centre point; stability and gradual changes matter more than chasing the edge of a wider species range.

What pH and hardness are suitable?

Keep pH stable within 6.0-7.8. Soft-to-medium water around 4-12 dGH is a practical OATA-aligned target, while avoiding sudden chemistry changes.

Does a female betta need a filter and heater?

Yes. Use mature biological filtration with gentle flow and a thermostatically controlled heater verified by a thermometer. Air-breathing ability does not replace clean, warm water.

Can I keep this betta in a bowl?

No. Bowls and vases are difficult to heat and filter, change chemistry quickly and do not provide suitable long-term space or environmental variety.

Can one female betta live by herself?

Yes. One female in a planted aquarium is the lower-risk default and she does not require another betta for companionship.

Can I keep several female bettas together?

Female groups are advanced and never guaranteed peaceful. They require much more space than a single setup, dense sight-line breaks, close observation and separate heated accommodation ready for immediate use.

What fish can live with a female betta?

No species is universally safe. Avoid other bettas by default, fin nippers and boisterous feeders; assess tank size, water match and individual behaviour, with a separation plan available.

Can I keep a male and female together?

Not as an ordinary pair. Controlled breeding is specialist work because courtship and territorial behaviour can cause injury, and this listing is not sold as a matched breeding fish.

What should I feed a female betta?

Use a quality complete betta pellet or flake, with small suitable live or frozen foods for variety. Feed only what is consumed within a few minutes once daily and remove leftovers.

How should I acclimate the fish after delivery?

Prepare a cycled, heated aquarium first, dim the lights, match temperature gradually and introduce aquarium water in measured stages. Follow the linked acclimation guide and avoid adding transport water where practical.

Do I get a Live Arrival Guarantee or first-order discount?

Eligible livestock orders receive the current Live Arrival Guarantee when its reporting conditions are followed. New customers can use WELCOME10 for 10% off a first order, subject to the active discount terms.