
Cardinal Tetra (Paracheirodon axelrodi)
23–27°C · pH 4.5–7 · 60L

Red Marlboro Discus is a warm red domestic Symphysodon strain for experienced keepers with mature, very warm, clean freshwater aquariums.
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. Product-photo provenance and any image-specific limitations are stated on the listing.
Symphysodon aequifasciatus
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Red Marlboro Discus is a warm red domestic Symphysodon strain for experienced keepers with mature, very warm, clean freshwater aquariums.
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. Product-photo provenance and any image-specific limitations are stated on the listing.

23–27°C · pH 4.5–7 · 60L

24–27°C · pH 5.5–7 · 80L

18–26°C · pH 6.5–8 · 30L

23–27°C · pH 7.4–8.4 · 1000L

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
Red Marlboro Discus is a classic domestic discus strain, valued for warm red-orange colour and the calm, rounded body shape that makes Symphysodon such a prized display fish. The strain name should not be read as a Latin species; the correct care anchor is the discus group, especially the Symphysodon aequifasciatus complex used for many domestic aquarium lines.
This fish suits aquarists who already understand warm, soft-water husbandry. It needs a stable aquarium, a careful feeding routine and peaceful tank mates. In the right setup it becomes a quiet centrepiece with strong colour and natural group behaviour.
| Scientific anchor | Symphysodon aequifasciatus complex, domestic Red Marlboro strain |
|---|---|
| Adult size | 15-20 cm |
| Care level | Advanced |
| Minimum aquarium | 285 litres; larger for a proper group |
| Temperature | 28-31°C |
| pH | 6.0-7.5 |
| Temperament | Peaceful and social |
| Diet | Quality discus foods with varied frozen supplements |
Build the aquarium around the discus, not around a random community mix. Use mature biological filtration, gentle circulation, stable heat and a maintenance routine that keeps nitrate and dissolved waste low. Smooth wood, open swimming space, dark backgrounds and heat-tolerant plants work well.
Keep Red Marlboro Discus in a group where possible. Groups spread hierarchy pressure and help the fish behave more naturally. Single juveniles often become stressed or shy, especially in busy tanks.
Feed a clean, varied diet: quality discus granules, soft sinking foods and frozen brine shrimp, mysis or bloodworm in moderation. Small portions several times a day are better than large messy feeds. Because the aquarium is warm, leftover food spoils quickly and should be removed.
Suitable tank mates include Cardinal Tetras, Rummy Nose Tetras, Corydoras sterbai and peaceful warm-water plecos. For alternative discus displays, compare Brilliant Turquoise Discus with Blue Snakeskin Discus. Avoid aggressive cichlids, fin nippers, boisterous barbs and fish that prefer cooler conditions. Quarantine all additions before they enter a discus display.
Is Red Marlboro a scientific name? No. It is a domestic colour strain, so we avoid presenting it as a fake Latin species.
Is this discus suitable for beginners? Not usually. It is best for keepers who can maintain very warm, clean, stable water.
How is the fish shipped? It is packed carefully and sent by licensed live-animal courier with our Live Arrival Guarantee.