Blue Turquoise Discus
- Size: 6–8 inches (15–20 cm) as adults
- Tank: 55 gallons minimum for a group, tall (20"+ height)
- pH: 6.0–7.2
- Temperature: 82–86°F (28–30°C)
- Hardness: Soft to moderate (2–8 dGH)
- Temperament: Peaceful, shoaling
- Difficulty: Intermediate to advanced
Overview
Blue Turquoise is a near-solid-color strain built around brilliant, electric blue iridescence covering most of the body, typically with light red spotting or striping retained along the dorsal fin and face as a secondary accent. It's worth distinguishing clearly from the flagship Red Turquoise strain covered elsewhere on this site: Red Turquoise is a turquoise base heavily overlaid with red striations across the whole body, while Blue Turquoise pushes the blue itself to near-solid coverage and keeps the red as a minor accent rather than a defining pattern.
The iridescent blue in this strain is genuinely one of the most striking colors in the discus hobby under the right lighting — it can shift from a deep cobalt to a bright electric cyan depending on angle and light temperature, which is part of why turquoise-based strains remain some of the most popular in the hobby generations after their initial development.
Tank Setup & Water
- Tank: Standard discus baseline — tall, 55 gallons minimum for a growing group.
- Substrate: Either works; a darker substrate or background makes the electric blue pop noticeably more than a bright or pale tank.
- Water chemistry: Standard discus range — 6.0–7.2 pH, 82–86°F.
Feeding
Standard discus diet — quality pellets as the staple, with beef heart mix and frozen foods in rotation. Unlike red or orange strains, Blue Turquoise doesn't benefit meaningfully from carotenoid-heavy foods; consistent, high-quality nutrition and stable water do more for iridescent blue tone than any specific color-boosting ingredient.
Temperament & Compatibility
Standard discus social behavior — peaceful, shoaling, best kept in groups of six or more. Reads as a strong cool-toned contrast alongside warmer strains like Melon or Lemon Yellow in a mixed display.
Breeding Notes
Standard discus pairing, spawning, and parental slime-feeding — see the breeding guide for the full cycle. Turquoise-family genetics are well established in the hobby and breed reasonably true, though the balance between blue coverage and red accenting varies across a spawn.
Common Issues
No strain-specific health concerns beyond the general discus issues covered in common diseases. Dulling of the iridescent blue is more often a lighting, angle, or stress issue than illness — check water parameters if it persists across viewing conditions.
Where to Get Quality Fish
Look for bright, even blue iridescence without dull or patchy sections, and confirm with the seller whether the fish is graded as Blue Turquoise or the more heavily red-patterned Red Turquoise if the distinction matters to you. Pet Zone SD stocks Blue Turquoise when available. See our sourcing guide for general buying advice.
Cost: Typically $20–40 for quality juveniles, similar to Red Turquoise.
Final Thoughts
Blue Turquoise is a showstopping strain for a keeper who wants the iridescent blue that made turquoise discus famous, without the heavier red patterning of the classic Red Turquoise look — a strong centerpiece choice once your discus fundamentals are solid.
Blue Turquoise FAQ
What's the difference between Blue Turquoise and Red Turquoise discus?
Red Turquoise is a turquoise base heavily overlaid with red striations across the whole body. Blue Turquoise pushes the blue itself to near-solid coverage and keeps red only as a minor accent along the dorsal fin and face rather than a defining pattern.
Why does Blue Turquoise discus change color under different lighting?
The blue is structurally iridescent rather than pigment-based, so it shifts from a deep cobalt to a bright electric cyan depending on viewing angle and light temperature — the same phenomenon that makes many iridescent fish and insects change color as you move around them.
Does diet affect Blue Turquoise discus color?
Not much, unlike red or orange strains. Blue Turquoise doesn't benefit meaningfully from carotenoid-heavy foods; consistent, high-quality nutrition and stable water do more for iridescent blue tone than any specific color-boosting ingredient.