−38%
Expert
Super Red Melon Discus
28–32°C · pH 5.5–7 · 250L
£57.99£93.99
Cobalt-blue discus, about 18 cm, with record-approved tank mates including rams and pencilfish. Soft water, 26-30C, 250 L+, expert care.
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.
Symphysodon Cobalt
Discus cobalt bond and breed in male/female pairs — buying a pair gives them the social structure they need.
Cobalt-blue discus, about 18 cm, with record-approved tank mates including rams and pencilfish. Soft water, 26-30C, 250 L+, expert care.
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.
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
Building a community around a Cobalt discus is half the fun, because this strain's record gives you a more interesting guest list than most: alongside the familiar cardinal and rummy-nose tetras, Corydoras and Otocinclus, it specifically welcomes rams and peaceful pencilfish. That opens the door to a layered softwater biotope with the cobalt-blue centrepiece its name promises holding the middle of the tank.
The fish itself reaches around 18 cm and, looked after to the Expert standard its rating demands, can live up to ten years. The water it needs is classic discus territory: 26–30 °C, pH 5–7, hardness no more than 10 dGH, in an aquarium of 250 litres or larger. Feeding spans carnivore and omnivore, so rotate meaty staples with broader fare.
Peaceful by nature, the Cobalt still needs protecting from the wrong neighbours. The record's avoid list is blunt: no aggressive cichlids, no fin-nipping barbs, no fast boisterous fish, no large predators, nothing so active it strips food from the water first, and no coldwater species. Every addition should pass the question: will this fish leave the discus alone at dinner time?
Mealtimes are pleasingly uncomplicated for a fish with this reputation. The carnivore/omnivore listing supports a rotation that leads with meaty foods and broadens from there, and a decade-long lifespan gives you years to learn the individual fish's preferences. Answers to the usual buyer questions — growth, temperament, breeding, acclimatisation — live in the FAQ section below.
Sketch the whole community first — discus, dither fish, bottom crew — and confirm everything on the list thrives in soft, warm, acidic water. With rams and pencilfish as record-approved options, the Cobalt suits keepers wanting a fuller, more naturalistic stocking than the standard tetra-and-cory formula. It is a strain that genuinely benefits from a thoughtfully assembled supporting cast, and the planning stage is worth enjoying in its own right. Shipped under our live arrival guarantee by licensed live-animal courier.
28–32°C · pH 5.5–7 · 250L
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