
Libby Betta, Split-Tailed Betta red XL (Betta spl. male veiltail red)
24–28°C · pH 6–7.5 · 19L

Young Libby split-tailed betta, mixed male/female pick at ~3.5 cm. Easy care, semi-aggressive. 23–27°C, pH 6.0–7.8, 40 L minimum.
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. Photos are AI-enhanced, so the animal may show subtle colour or marking differences.
Betta spl. male female mix
Young Libby split-tailed betta, mixed male/female pick at ~3.5 cm. Easy care, semi-aggressive. 23–27°C, pH 6.0–7.8, 40 L minimum.
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. Photos are AI-enhanced, so the animal may show subtle colour or marking differences.

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
Lucky-dip bettas have their own charm. This listing is our male/female mixed pick of the Libby split-tailed type — young fish around the 3.5 cm mark whose adult colour is still revealing itself, supplied unsexed from the mix. The split-tailed finnage that defines the line is present from the start, and watching a juvenile colour up over its first months with you is half the fun of buying this way. It is also the most affordable route into betta keeping we offer in this strain.
Care is rated easy and temperament semi-aggressive — gentler on paper than a show male, but still a Betta splendens with opinions. Snails make trouble-free companions, and some shrimp can work although adults may be eaten. The avoid list is familiar: no other male bettas, no fin-nipping or territorial species, no large predators, and nothing that needs markedly different water. Note the cooler-than-usual band in this record — 23–27 °C — and a forgiving pH window stretching to 7.8, which covers most UK tap supplies. A 40-litre aquarium is the recorded minimum, giving a growing fish room to develop.
Buying juveniles rewards a little patience in the first weeks. Feed small carnivore-appropriate portions more frequently than you would an adult, keep the temperature pinned inside the recorded 23–27 °C band, and the growth and colour development take care of themselves. The 40-litre recommendation is generous for a fish this size on purpose: stable volume means stable chemistry while a young betta develops. Watch the fish rather than the calendar when judging settling-in — once it holds the upper water confidently and feeds from the surface without hesitation, it is established. From there, maintenance is the standard weekly routine any easy-care fish asks for, with water kept inside pH 6.0–7.8 and 0–15 dGH.
Because sex is not specified on this mix, plan as if you were receiving a male: a tank without other bettas and without fin-nippers keeps every outcome safe. Territorial behaviour can appear around breeding condition. UK delivery is by licensed live-animal courier, covered by our live arrival guarantee.

24–28°C · pH 6–7.5 · 19L

24–28°C · pH 6–7.8 · 19L

24–30°C · pH 6–7.5 · 20L

24–30°C · pH 6–7.5 · 38L

24–30°C · pH 6–7.5 · 20+L

24–30°C · pH 6–7.5 · 20L

18–26°C · pH 6.5–8 · 30L

23–27°C · pH 7.4–8.4 · 500L

20–27°C · pH 6–7 · 54L

23–27°C · pH 7.4–8.4 · 150L

24–28°C · pH 6.5–7.8 · 300L

20–24°C · pH 7–8 · 45L

24–28°C · pH 6.5–7.5 · 2000L

24–28°C · pH 7.5–8.5 · 200L

24–28°C · pH 5.5–7 · 60L

18–25°C · pH 6–8 · 100L

24–28°C · pH 7–8 · 120L

18–28°C · pH 6.5–8 · 20L

24–27°C · pH 7.5–8.8 · 150L

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