
Symphysodon discus blue heckel
28–30°C · pH 6–7 · 250L

Randomly selected juvenile discus for experienced aquarists building a warm, soft-water group. Colour and pattern develop with age, so this assorted mix suits keepers who enjoy raising discus rather than choosing a fixed strain.
Adult size is the maximum length this species reaches at full maturity (scientific sources). The livestock you receive will be younger and smaller — pick a size variant above for the actual shipping size. Photos are AI-enhanced, so the animal may show subtle colour or marking differences.
Symphysodon spp.
Assorted Juvenile Discus bond and breed in male/female pairs — buying a pair gives them the social structure they need.
Randomly selected juvenile discus for experienced aquarists building a warm, soft-water group. Colour and pattern develop with age, so this assorted mix suits keepers who enjoy raising discus rather than choosing a fixed strain.
Adult size is the maximum length this species reaches at full maturity (scientific sources). The livestock you receive will be younger and smaller — pick a size variant above for the actual shipping size. Photos are AI-enhanced, so the animal may show subtle colour or marking differences.

Keep the king of the aquarium — Discus Fish are striking South American cichlids for experienced keepers. Soft warm water, group living, and patience required. UK delivery available.
Maintain these water conditions for optimal health and vibrant colors
Assorted Juvenile Discus (Symphysodon mix) is a randomly selected young discus for experienced aquarists who want to grow on a warm-water group and enjoy the colour development as the fish mature. This listing is not a fixed colour strain: each juvenile is chosen from an assorted mix, so the final adult pattern may lean red, blue, turquoise, brown, spotted, striped or somewhere between.
Choose this fish when the aquarium is already mature, warm and stable. Juvenile discus reward patient care, clean water and calm tank mates; they are not a quick community-fish impulse purchase. If you are building a dedicated display, start with a proper social group, feed small meals consistently and keep the environment steady rather than chasing rapid changes.
| Selection type | Random assorted juvenile; colour and pattern are not pre-selected. |
|---|---|
| Current size band | Supplier size is usually around 3-4 cm for this SKU when available. |
| Adult appearance | Develops with age, diet, lighting, confidence and background colour. |
| Best suited to | Experienced keepers raising a group, not buyers needing one exact strain. |
| Stock note | If the product is out of stock, keep the page bookmarked and check the Discus collection for available alternatives. |
| Scientific name | Symphysodon spp. assorted domestic mix |
|---|---|
| Family | Cichlidae |
| Adult size | Usually around 15-20 cm in aquarium care |
| Group size | Plan for 5-6+ discus where space allows |
| Minimum aquarium | 250 litres or larger for a stable juvenile group |
| Temperature | 28-32°C; many keepers aim around 28-30°C for settled displays |
| pH | Soft to neutral conditions are preferred; stability matters most |
| Temperament | Peaceful, social and hierarchical |
| Diet | Quality discus granules, small frozen foods and varied prepared foods |
| Care level | Difficult / experienced aquarist |
Discus are calm South American cichlids that dislike rush, swings and rough tank mates. Build the aquarium around warmth, steady filtration and open swimming room. Gentle flow is better than a blasting current, and a taller aquarium helps show their deep body shape properly. Dark wood, shaded planting, clean open areas and a simple feeding zone all help juveniles settle.
Water quality is the make-or-break point. Keep nitrate low, avoid sudden temperature or pH changes, and make water changes part of the routine rather than an emergency response. A mature filter, stable heater and reliable thermometer are more important than decorative extras. If you are new to discus, read our discus care guide before ordering and compare the current range in the Discus collection.
| Good signs | Fish feed confidently, hold fins open, breathe evenly and stay with the group. |
|---|---|
| Stress signs | Dark colour, clamped fins, hiding, fast breathing or refusing repeated meals. |
| Flow | Gentle circulation with no constant battle against the filter outlet. |
| Decor | Wood, roots, background cover and open space for calm mid-water movement. |
| Maintenance | Small, regular water changes and careful feeding beat occasional heavy cleaning. |
Young discus grow best on several small, clean meals rather than one oversized feed. Use a quality discus granule or soft stick as the base, then rotate frozen brine shrimp, clean bloodworm as an occasional food, fine prepared foods and other small high-protein meals. Remove leftovers quickly because warm discus aquariums can foul faster than cooler community tanks.
For growth support, feed the group in a quiet area where every fish can eat. Submissive juveniles may hang back, so watch the whole group rather than just the boldest fish. If you also need food for the setup, useful supporting options include Tropical Discus Gran D-50 Plus Baby, Tropical D-Allio Plus Granulat and Discus Life Vegetable Plus Frozen Food.
Keep tank mates peaceful, warm-tolerant and calm at feeding time. Discus should not be bullied, chased or outcompeted. Many classic community fish prefer cooler water, so match the aquarium to the discus first and choose companions second.
| Often suitable | Cardinal Tetras, Rummy Nose Tetras, warm-tolerant Corydoras, Otocinclus and peaceful dwarf cichlids. |
|---|---|
| Use caution | Fast feeders, large plecos, territorial cichlids and species that prefer cooler water. |
| Avoid | Fin nippers, aggressive cichlids, boisterous barbs and fish that need strong current. |
| Best display style | A calm Amazon-style aquarium with open mid-water space and a settled group. |
This assorted listing is best when you care more about raising healthy juveniles than choosing a guaranteed adult colour. If you want a more specific look, compare named discus such as Turquoise Checkerboard Discus, Red Stone Discus, Red Valentine Discus or Leopard Discus.
When available to order, live fish are packed for licensed courier delivery and covered by our Live Arrival Guarantee. New customers can use WELCOME10 for 10% off their first order where the code is active and eligible. On arrival, float the bag to equalise temperature, dim the lights and acclimate slowly into a prepared quarantine or display aquarium. Do not add juveniles to an unsettled tank; discus do best when the aquarium is ready before the box arrives.
| Before ordering | Confirm the tank is cycled, warm, stable and large enough for the group. |
|---|---|
| On arrival | Keep lights low, acclimate patiently and avoid feeding immediately if fish are stressed. |
| First week | Offer small meals, watch every fish feed and keep water quality very clean. |
| Long-term aim | A settled discus group with steady growth, confident feeding and calm tank mates. |
Is the colour guaranteed? No. This is an assorted Symphysodon mix, so exact adult colour and pattern are not guaranteed.
Can I keep one discus? A single discus is not the recommended plan. They are social cichlids and usually settle better in a properly sized group.
Are they beginner fish? No. Juvenile discus need warm, stable water, frequent small feeds and careful observation, so they are best for experienced keepers.
What should I buy instead if I want an easier warm-water community fish? Consider hardy South American species first, then move into discus once the aquarium routine is proven.

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