Betta spl. male rose blue - Betta Fish for Sale UK

Rose-type finnage in cool blue gives this male a layered, petalled look — the rose line's abundant, overlapping fin material rendered in a single blue palette across a fish of around 6.5 cm. Where many show strains chase contrast, the rose blue goes the other way: one colour, maximum volume of finnage, and the result moves through the water like fabric.

His ratings make an interesting pair: easy care, aggressive temperament. Daily upkeep is genuinely simple — stable warmth, clean water, carnivore feeding — but his social rules are strict fighter's rules. Peaceful snails are sound companions, peaceful shrimp only with caution in heavily planted tanks, and very calm non-nippy fish are conceivable only in larger aquariums, watched closely. Keep him from other male bettas, fin-nipping species such as tiger barbs, aggressive or territorial fish, large predators, and brightly coloured tank mates that draw his fire. The recorded floor is 20 litres at 24–28 °C — a slightly tighter heat band than most of our lines, worth noting when you set the thermostat — with pH 6.0–7.5 and hardness 1–15 dGH. A surface-oriented fish, more territorial when breeding.

Note the thermostat detail before anything else: his band is 24–28 °C, not the wider range many of our bettas carry, so set the heater mid-band at 26 °C and let it hold. The rest of his easy rating is genuine — carnivore feeding, ordinary weekly maintenance inside pH 6.0–7.5, and a 20-litre minimum that suits compact setups. Rose-type finnage benefits from the same surface-resting furniture as other heavy-finned strains, and his all-blue colouring rewards a pale substrate that bounces light up through the fin layers. If you trial the very calm tank mates his record cautiously permits, do it in a larger tank than his minimum and watch the first 48 hours closely.

Rose blue care framework

• Size: about 6.5 cm
• Lifespan: around 3 years
• Care: easy
• Temperament: aggressive
• Temperature: 24–28 °C
• pH: 6.0–7.5
• Hardness: 1–15 dGH
• Tank: 20 litres minimum
• Diet: carnivore
• Zone: top of tank

Before checkout

All that rose finnage is heavy to carry, so furnish the upper tank with resting points and keep flow soft. Your fish leaves us with a licensed live-animal courier and arrives under our live arrival guarantee, anywhere in the UK.