Difficult
Protopterus annectens
24–28°C · pH 6.5–7.5 · 2000L
£62.99
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.
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.
Betta splendens
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.
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.
The betta fish is one of the most popular and most misunderstood freshwater species. This guide covers everything from proper tank size to the truth about tank mates.
Maintain these water conditions for optimal health and vibrant colors
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.
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.
24–28°C · pH 6.5–7.5 · 2000L
24–28°C · pH 5.5–7 · 60L
24–27°C · pH 7.5–8.8 · 150L
24–28°C · pH 8–9 · 300L
20–25°C · pH 6–7.5 · 80L
26–30°C · pH 5.5–7 · 60L
24–27°C · pH 7.5–9 · 150L
18–28°C · pH 6.5–8 · 20L
22–26°C · pH 6–7.5 · 60L
24–28°C · pH 7.5–8.5 · 40L
24–28°C · pH 7.5–8.5 · 500L
22–26°C · pH 6–7.5 · 150L
23–27°C · pH 5.5–7.5 · 80L
20–25°C · pH 6–7 · 60L
23–28°C · pH 6–7.5 · 80L