Discus Red Stone (Symphysodon sp.)

Overview

The Discus Red Stone is a beautifully coloured variety of Symphysodon, prized for its rich red tones, rounded body shape and calm, graceful swimming style. At around 7cm on offer (with an estimated adult size of up to 15cm), this is a superb choice for aquarists looking to build a premium Amazon-style display aquarium. Discus are often considered the “king” of freshwater fish thanks to their elegant appearance and captivating behaviour.

This species is best suited to keepers who can provide stable, warm, soft water and a peaceful environment. While not the easiest fish for absolute beginners, they are very rewarding when kept correctly. Our Discus Red Stone fish are supplied with care, backed by our live arrival guarantee and fast UK delivery, so you can order with confidence.

As with all discus, success comes from consistency: warm temperatures, excellent filtration, low stress, and a varied, high-quality diet. In return, you’ll enjoy one of the most iconic and impressive freshwater fish available in the hobby.

Care at a Glance

Origin & Natural Habitat

Discus originate from the slow-moving blackwater and clearwater tributaries of the Amazon Basin in South America, particularly areas of Brazil, Peru and Colombia. In the wild, they inhabit warm, calm waters with submerged roots, leaf litter, and dense marginal vegetation. These environments are typically low in minerals and rich in tannins, creating the soft, acidic conditions discus prefer.

Their natural habitat helps explain why discus are so sensitive to poor water quality and sudden changes. They are adapted to warm, stable water with minimal current and a peaceful social structure. In aquariums, recreating these conditions is the key to long-term health and strong colouration.

Tank Setup & Water Parameters

For discus, stability is more important than chasing exact numbers. A mature aquarium with efficient filtration, regular maintenance and consistent heating is essential. A group of discus should be kept in a spacious tank with plenty of swimming room and subdued décor. Driftwood, smooth stones, broad-leaved plants and open areas work well, while sharp decorations should be avoided.

We recommend a minimum of 250 litres for a small group, with larger tanks always preferred. Discus thrive in warm water between 26–30°C, with a pH of 5.0–7.0 and low general hardness. Because they are sensitive to waste build-up, strong biological filtration and frequent partial water changes are vital. Many keepers also use a bare-bottom or lightly decorated setup for easier maintenance, especially when growing discus on.

Lighting should be gentle rather than harsh, as discus are naturally found in shaded waters. Tank mates should be chosen carefully to avoid stress and competition for food. If you are setting up a dedicated discus aquarium, aim for a calm, uncluttered layout that makes feeding and cleaning straightforward.

Feeding Guide

Discus are omnivores with a strong preference for protein-rich foods. A varied diet is important for growth, colour and condition. High-quality discus granules, pellets and specialised prepared foods should form the staple, supplemented with frozen foods such as bloodworm, brine shrimp, daphnia and mysis. Some keepers also offer live foods occasionally, provided they are sourced safely.

Feed small amounts two to four times daily, especially for younger or growing fish. Discus have relatively small stomachs and do best with regular, manageable meals rather than one large feeding. Remove any uneaten food promptly to maintain excellent water quality. A varied diet will help bring out the best in the Red Stone strain’s colour and body shape.

Tank Mates / Compatibility

Discus are peaceful and should be housed with calm, non-nippy species that enjoy similar warm water conditions. Good companions include peaceful tetras, Corydoras that tolerate warmer water, pencilfish, dwarf cichlids with gentle temperaments, and certain peaceful catfish. Always ensure any tank mate can handle the higher temperatures discus require.

Avoid aggressive fish, fin-nippers, boisterous species, and anything that may outcompete discus at feeding time. Fast-moving barbs, large cichlids, and cold-water species are unsuitable. It is also best to avoid overcrowding, as discus can become stressed in busy tanks. A well-planned community with compatible species will allow discus to display natural behaviour and colour.

Why Buy from Tropical Fish Co

At Tropical Fish Co, we understand that buying discus is about more than just choosing a beautiful fish — it is about receiving healthy stock, expert support and a smooth delivery experience. That is why we carefully prepare and dispatch our fish with attention to welfare at every stage. Your Discus Red Stone will be packed with care and sent using fast UK delivery, helping reduce transit stress and get your fish to you quickly.

We also offer a live arrival guarantee for added peace of mind, so you can shop with confidence. Whether you are building your first discus setup or adding a standout specimen to an established display, we are here to help you choose the right fish and keep it thriving. With their stunning red patterning and elegant profile, Discus Red Stone are a superb centrepiece for any serious tropical aquarium.