Blue Diamant Discus (Symphysodon sp.)

Blue Diamant is the trade-form name for these discus; the supplied name identifies the genus Symphysodon without establishing a particular species or wild collection locality. Start with space for the adult group: the 275-litre planning figure on this page should be considered alongside how many fish you intend to keep. If you can offer that volume, you get one of the cleanest expressions of blue in the hobby, exactly as the Diamant name suggests, carried mid-water on the classic round discus form.

Keep the aquarium at 26–30 °C, pH 6–7.5, general hardness 4–12 dGH, and the patience to keep all three steady. The strain is rated Expert for care. The existing adult-size guide is around 18 cm; allow space for growth and ask about the conditions in which the fish are currently kept.

Diet is carnivore/omnivore — meaty foods at the core, variety around the edges. Potential companions need individual checks for compatible temperature, water conditions and feeding pace: other discus, cardinal tetras, rummy-nose tetras, Corydoras catfish, Otocinclus and peaceful dwarf cichlids. Avoid aggressive cichlids, fin-nipping barbs, large predators, fast boisterous fish, coldwater species and very hard-water fish.

A larger volume of water slows changes in conditions, helping keep the aquarium stable. Plan the group as well as the tank volume; discus are social fish and should not be chosen simply to fill an isolated space. The FAQ further down this page covers feeding, acclimatisation, breeding difficulty and community questions in detail.

Blue Diamant care brief

• Adult-size guide around 18 cm; plan room for growth
• 275-litre planning figure; consider the adult group and floor space
• 26–30 °C; pH 6–7.5; general hardness 4–12 dGH
• Carnivore/omnivore feeding
• Peaceful mid-water temperament; Expert care

Is it the right fish for you?

Before ordering, plan the adult group, suitable water conditions and a regular maintenance routine. Each order quantity supplies one fish in the selected size grade. Check the chosen option for its current availability; the size selector does not guarantee a sex or an established breeding pair.

The water ranges above are general discus guidance from OATA’s discus care sheet. Match changes to the conditions your fish are accustomed to, keeping the aquarium stable.