Discus San Merah (Symphysodon sp.)

The San Merah Discus is the epitome of deep, rich coloration. Unlike many other red Discus varieties that lean toward orange, a high-quality San Merah displays a solid, dark, brick-red or blood-red hue that is incredibly uniform across the entire body. A defining characteristic of a true San Merah is the lack of vertical stress bars and a strikingly clear, patternless face. With their deep red eyes and smooth, matte finish, these fish offer a sophisticated and regal presence that stands out in any high-end aquarium.

Key Information

• Common Name: San Merah Discus, Deep Red Discus

• Scientific Name: Symphysodon sp.

• Origin: Selectively bred (Lineage developed in Singapore/Malaysia)

• Max Size: 15–20 cm

• Lifespan: 10–15 years

• Temperament: Peaceful and social

• Diet: Carnivore/Omnivore – Requires high-protein foods like beef heart, bloodworms, and specialized red-enhancing granules.

• Care Level: Difficult (Requires precise water management)

Water Parameters

Behaviour & Tank Compatibility

San Merah Discus are highly social shoaling fish and must be kept in a group of 5–6 or more. They are gentle and slow-moving, often becoming the "heart" of the aquarium. They should be housed with peaceful, heat-tolerant tank mates. Ideal companions include Cardinal Tetras, Rummynose Tetras, and Corydoras sterbai. Because they are quite calm, avoid housing them with overly aggressive or boisterous fish that might dominate the feeding area or cause them to hide.

Ideal Tank Setup

• Pristine Water Quality: Like all Discus, San Merahs are sensitive to nitrates. Frequent, large water changes are mandatory to maintain their deep red intensity and health.

• Warmth and Stability: Use a reliable dual-heater system to prevent temperature fluctuations; a steady 29°C is ideal.

• Dark Background & Substrate: Unlike Pigeon Blood varieties, San Merahs look incredible against a dark background or natural sand, which helps intensify their deep red pigments.

• Natural Texture: Use vertical driftwood and large plants (like Amazon Swords) to provide security and mimic their natural riverine roots.

• Subdued Lighting: Floating plants create the low-stress environment where Discus feel most comfortable.

Why Choose the San Merah Discus?

The San Merah is the "connoisseur's choice" for red Discus. Its deep, velvety texture provides a level of color saturation that "neon" red varieties simply cannot match. For the hobbyist looking for a timeless, elegant, and bar-less red Discus with a legendary pedigree, the San Merah is an unmatched centerpiece.