Moderate
Betta spl. female SuperDelta big ears mix
24–30°C · pH 6–7.5 · 20L
£10.99
A striking, labyrinth fish with vivid blue alien-patterned coloration that thrives in warm, calm, planted aquariums. Moderate care, semi-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
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A striking, labyrinth fish with vivid blue alien-patterned coloration that thrives in warm, calm, planted aquariums. Moderate care, semi-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
Females from the Alien blue line carry the same hypnotic metallic-blue mesh as the males — the patterning runs across her whole 6.5 cm body — with a temperament dialled down a step to semi-aggressive. For keepers drawn to the alien look but wanting slightly easier housing decisions, the female is the smarter pick.
Her compatibility record opens a narrow door rather than locking it: snails are safe, peaceful shrimp may settle in heavily planted tanks though hunting is possible, and very small, peaceful tank mates can be considered — but only in a larger, well-planted tank under close monitoring. Closed to her: other bettas, fin-nipping fish, large or aggressive cichlids, fast boisterous schooling fish, and species needing very different water conditions. The recorded minimum is 40 litres — generous, and the reason her limited community option exists at all. Hold the water at 24–30 °C, pH 6.0–7.5, hardness 1–15 dGH, feed her as a carnivore, and expect her in the upper region. Moderate care overall, with breeding-condition territoriality noted on her file as the thing to watch.
The 40-litre minimum is what unlocks her difference from the male: in that volume, her record's allowance for very small, peaceful tank mates becomes a workable plan rather than a risk. Build it as the record specifies — well-planted, monitored closely — and add her after the residents are established. Her alien patterning needs the same point-lighting treatment as the male's to show its mesh detail, and her carnivore feeding should be targeted at the surface where she holds position. Chemistry is unremarkable: 24–30 °C, pH 6.0–7.5, 1–15 dGH, weekly changes. Watch her most closely around breeding condition, when the territorial behaviour her record notes is likeliest to surface, and have a separation plan if a community is running.
Many buyers take a female alongside a male Alien for future projects — house them separately; her record bars cohabiting with other bettas. UK orders travel by licensed live-animal courier under our live arrival guarantee.
