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Betta battle paradise DUO mixed colors 1 pc — representative image

Betta splendens

Betta battle paradise DUO mixed colors - Betta Fish for Sale UK

Moderate Care
Aggressive
£20.99Sold Out

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Live arrival guaranteed. Full refund or replacement if they don’t arrive healthy. Packed in oxygenated bags with insulation and heat packs when needed.
£19.95 tracked delivery — half price (£9.98) from £100.00, free from £200.00. One delivery charge however many fish you add — everything travels together with a licensed live-animal courier.
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A striking, colorful betta fish with flowing fins and bold personality, ideal for a warm, well-maintained solo aquarium. Moderate care, aggressive. 24-30C, pH 6.0-7.5.

Care at a Glance

Scientific Name
Betta splendens
Max Adult Size
up to 6.5 cm
Lifespan
3 years
Care Level
Moderate
Temperament
Aggressive
Temperature
24–30°C
pH Range
6–7.5
Hardness
1–15 dGH
Minimum Tank
20L
Diet
Carnivore

Adult size is the maximum length this species reaches at full maturity (scientific sources). The livestock you receive will be younger and smaller — pick a size variant above for the actual shipping size. Product-photo provenance and any image-specific limitations are stated on the listing.

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Blue and red male Betta splendens swimming side-on in an aquarium
Full Care Guide

Betta Fish Care Guide: Siamese Fighting Fish

For one typical domestic Betta splendens, start with at least 20 litres, a mature filter, thermostatic heater, separate thermometer, gentle flow, a secure lid with surface access, and plants or refuges. Keep one male per aquarium.

13 min readRead guide

Water Parameters

Maintain these water conditions for optimal health and vibrant colors

Temperature
24–30°C
24°CIdeal30°C
pH Level
6–7.5
6Ideal7.5
Water Hardness
1–15 dGH
1 dGHIdeal15 dGH

Sold per fish from the battle paradise DUO line, this mixed-colour betta arrives at around 6.5 cm wearing whichever colour combination the line throws — the DUO designation refers to the supplier's line, and each individual fish is its own draw from the mix. What is consistent is the type: a robust, classically proportioned betta with the full personality of the species.

That personality is the key spec. He is rated aggressive with moderate care needs, and his record sets the boundaries: peaceful small fish are possible only in larger, well-planted tanks and only with his individual temperament weighed first; small snails are generally fine; shrimp only with caution, since they may be eaten. Keep him away from other male bettas, fin-nipping fish, aggressive or highly territorial species, and any fish large enough to bully or swallow him — he is bold beyond his size and will not back down first. From 20 litres he settles well, with water at 24–30 °C, pH 6.0–7.5 and hardness 1–15 dGH. A carnivore holding the top region of the tank, he shows the species' breeding-condition territoriality on schedule.

One fish per order means one decision per tank, and his record makes the decision framework clear: his individual temperament determines everything, so treat the first fortnight as an assessment period. Most males from this line settle as classic solo bettas — 20 litres, snails, surface territory — while the record's allowance for peaceful small fish in larger planted tanks applies only to individuals who prove placid. Practical care is uniform across the line: heater inside 24–30 °C, carnivore feeding, weekly changes holding pH 6.0–7.5 and 1–15 dGH. Whatever colours arrive from the mix, photograph him on day one; mixed-line fish are unrepeatable, and the picture becomes the only record of exactly what the draw produced.

Battle paradise DUO care notes

  • Around 6.5 cm in size
  • Lifespan near 3 years
  • Moderate care level
  • Aggressive temperament
  • 24–30 °C range
  • pH 6.0–7.5
  • Hardness 1–15 dGH
  • 20-litre minimum
  • Carnivorous diet
  • Upper-water territory

Ordering by the piece

Each unit on this listing is one fish, individually packed. Colour is the line's surprise; condition is our guarantee — despatch by licensed live-animal courier with live arrival assured across the UK.

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