Blue Diamond Discus (Symphysodon aequifaciatus)

Blue Diamond Discus — Symphysodon aequifasciatus

Pure color. Pure calm.

The Blue Diamond Discus is the definition of clean elegance. Unlike patterned strains, this variety showcases a solid, luminous blue body that shimmers like polished sapphire under proper lighting. The absence of heavy striping or spotting allows the metallic sheen to become the focal point, giving the fish a smooth, glass-like finish that glows against dark backgrounds.

Originating from Amazonian floodplain bloodlines, discus are known for their calm, gliding movement. The Blue Diamond moves slowly and deliberately, often hovering in formation when kept in groups. In a well-maintained aquarium, a school creates a refined, gallery-like display rather than chaotic motion.

Reaching 6–8 inches, this strain is highly social and thrives in stable, warm environments. Once comfortable, they quickly recognize feeding routines and gather confidently at the front glass.

Aquarium Setup

• Minimum Tank Size: 75 gallons for a small group (125+ gallons preferred long-term)

• Group Size: 5 or more recommended

• Substrate: Bare bottom or fine sand

• Flow: Gentle to moderate

• Décor: Minimalist layout with open swimming space; driftwood optional

• Lighting: Moderate (enhances blue sheen)

• Filtration: Strong biological filtration with stable parameters

Tank Mates

Best with peaceful, warm-water species:

• Cardinal Tetras

• Rummy Nose Tetras

• Corydoras

• Peaceful plecos

• Calm eartheaters

Avoid aggressive cichlids and fin-nipping species.

Water Parameters

• Temperature: 82–88°F (28–31°C)

• pH: 5.5–6.8 preferred (can adapt slightly higher if very stable)

• Hardness: Soft water preferred

• Water Quality: Extremely clean and stable; frequent water changes essential

Diet

High-quality varied diet:

• Premium discus pellets

• Frozen bloodworms and brine shrimp

• Beef heart blends (optional)

• Multiple small feedings daily recommended