Libby Betta, Split-Tailed Betta (Betta spl. male female mix) - Betta Fish for Sale UK

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.

Care snapshot for the split-tailed mix

• Size at this grade: around 3.5 cm
• Expected lifespan: about 3 years
• Difficulty: easy
• Disposition: semi-aggressive
• Heat: 23–27 °C
• Acidity: pH 6.0–7.8
• Hardness band: 0–15 dGH
• Recommended minimum: 40 litres
• Diet type: carnivore
• Favours the top of the tank

Stocking note

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.