−22%
Expert
Super Red Melon Discus (Symphysodon spp.)
26–30°C · pH 6–7 · 300L
£72.99£93.99
Royal Blue discus bring intense blue colour to softwater displays. Peaceful, expert-level care; 250 L minimum at 26-30C, pH 5-7.
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.
Symphysodon sp.
Save when buying multiple fish. Each quantity is one fish; sex and pair formation are not guaranteed unless the selected variant explicitly states them.
Royal Blue discus bring intense blue colour to softwater displays. Peaceful, expert-level care; 250 L minimum at 26-30C, pH 5-7.
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.
Keep the king of the aquarium — Discus Fish are striking South American cichlids for experienced keepers. Soft warm water, group living, and patience required. UK delivery available.
Maintain these water conditions for optimal health and vibrant colors
Blue runs right through this strain's name and its appeal. Royal Blue is a classic Symphysodon line for keepers who want a discus display built around cool colour, and it holds the mid-water position where that blue shows to full effect against a planted or hardscaped background.
Two numbers from this product's record set the agenda. First, 250 litres — the minimum aquarium volume for keeping the strain well. Second, 26–30 °C — the temperature band the fish must live in, paired with soft water at pH 5–7 and 0–10 dGH. Hit those targets consistently and an Expert-rated fish becomes a manageable one; an adult Royal Blue tops out near 18 cm and can stay with you for as long as ten years.
Feeding is more flexible than many assume: the record lists this strain as an omnivore, so a varied rotation of foods suits it. Company should be chosen with the same care as the water. Other peaceful discus, cardinal tetras, rummy-nose tetras, Corydoras, Otocinclus and quiet dwarf cichlids make sound neighbours; aggressive cichlids, fin-nippers, large predators, fast boisterous species that outcompete it at feeding time, and coldwater fish do not.
Think of this purchase as a ten-year decision rather than a weekend project. A discus that can live a decade and reach 18 cm deserves a tank planned around its adult self, and the mid-water habit recorded for this strain means open swimming space through the centre of the aquascape matters as much as plant cover at the edges. Sort the layout before the fish arrives, not after.
Treat the Royal Blue as the anchor of the aquarium and build outwards from it: softwater-tolerant, peaceful species only, nothing quick enough to strip food from the water before the discus feeds. Our FAQ below answers the common questions on tank size, breeding and acclimatisation, and every order ships under our live arrival guarantee.
26–30°C · pH 6–7 · 300L
28–30°C · pH 6–7 · 250L
26–30°C · pH 5–7 · 250L
28–30°C · pH 6–7 · 250L
25–29°C · pH 6–7.5 · 250L
26–30°C · pH 5–7 · 250L
18–26°C · pH 6.5–8 · 30L
23–27°C · pH 7.4–8.4 · 1000L
20–24°C · pH 7–8 · 45L
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
24–28°C · pH 7.5–8.5 · 500L
28–30°C · pH 5.5–7.5 · 300L
22–28°C · pH 7–8.5 · 10L
23–27°C · pH 5.5–7.5 · 80L
24–27°C · pH 7.5–9 · 250L
24–28°C · pH 8–9 · 300L