The Blue Diamond 8/9cm discus is a classic, solid‑colour strain prized for its rich blue body and minimal patterning. With their graceful, disc‑shaped profile and calm, gliding movement, Blue Diamond discus make a stunning centrepiece for larger, warm, well‑filtered aquariums.
At 8–9cm, these fish are a medium juvenile size – big enough to travel and settle well, but with plenty of room to grow, bulk up and intensify their colour under the right conditions. In a stable discus setup, Blue Diamond 8/9cm will reward you with impressive presence and personality.
Blue Diamond 8/9cm – Key Features
- Striking Blue Diamond discus with solid blue body colour
- Size at sale: approximately 8–9cm
- Ideal for established, warm discus aquariums
- Graceful, peaceful cichlids that become real centrepiece fish
- Best kept in small groups for natural behaviour and confidence
If you’re building or expanding a discus display, Blue Diamond 8/9cm are an excellent colour strain to anchor your collection.
Tank Requirements for Blue Diamond Discus
Blue Diamond discus need warm, clean, stable water and a suitably sized aquarium:
- Tank size: From around 3–4ft (200L+) for a small group of discus
- Temperature: warm water, typically 28–30°C
- Décor: open swimming space with driftwood, plants and gentle hiding areas
- Substrate: fine sand or smooth gravel; bare‑bottom is also common in grow‑out tanks
- Filtration: strong biological filtration with gentle to moderate flow
Discus are sensitive to poor water quality, so regular maintenance and careful stocking are essential for Blue Diamond 8/9cm.
Water Parameters (Guide Only)
For long‑term success with Blue Diamond discus:
- Temperature: 28–30°C
- pH: generally 6.0–7.2 (slightly acidic to neutral)
- Hardness: soft to low‑medium hardness
- Ammonia & Nitrite: 0 ppm at all times
- Nitrate: kept low with frequent water changes
Stable parameters are more important than chasing exact numbers – avoid sudden swings when keeping Blue Diamond 8/9cm.
Feeding Blue Diamond 8/9cm
The Blue Diamond 8/9cm discus is an omnivore that thrives on a varied, high‑quality diet:
- Staple foods:
- Quality discus pellets or granules
- High‑quality tropical pellets suitable for larger fish
- Extras and treats:
- Frozen foods such as bloodworm, brine shrimp, mysis and beef heart mixes (used sensibly)
Feed small portions 2–3 times daily, ensuring all food is eaten quickly. A varied diet helps Blue Diamond discus maintain strong colour, growth and condition.
Behaviour and Tank Mates
Blue Diamond discus are generally peaceful but can be shy or reserved in the wrong environment:
- Behaviour: calm, schooling cichlids that feel most secure in groups
- Social: best kept in groups of 5+ discus where possible
- Temperament: peaceful, but may form hierarchies and mild pecking order
Suitable tank mates for Blue Diamond 8/9cm include:
- Small, peaceful, warm‑water tetras and rasboras
- Corydoras catfish that tolerate higher temperatures
- Some smaller, peaceful dwarf cichlids (with care and space)
Avoid aggressive, very active or fin‑nipping fish that may stress or outcompete Blue Diamond discus.
Important Notes
- Blue Diamond 8/9cm discus are best for intermediate to advanced fish keepers due to their water quality and temperature requirements.
- Always acclimate new discus slowly and avoid large, sudden changes in temperature or chemistry.
- Regular water changes, good filtration and a calm tank environment are key to long‑term success.
