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Marlboro Red Discus Care Guide

Marlboro Red is a selectively bred solid-red discus strain of the genus Symphysodon, an Amazonian cichlid that needs warm, soft, acidic water.

Overview

Marlboro Red is a selectively bred solid-red discus strain belonging to the genus Symphysodon, the discus cichlids of the Amazon basin. Solid-red and other color strains are the product of selective breeding of wild green, blue and brown discus. As a strain rather than a described species, its exact lineage is not formally classified.

Taxonomy

  • Family: Cichlidae
  • Genus: Symphysodon
  • Scientific name: Symphysodon sp. "Marlboro Red" (undescribed captive-bred strain)
  • Note: "Marlboro Red" is an aquarium strain, not a recognised species name

Habitat

The wild discus of the genus Symphysodon originate in the Amazon river basin, where they inhabit soft, highly acidic blackwater tributaries, typically with a pH between 5.0 and 6.0. They are highly social fish that occur in groups.

Tank requirements

  • Minimum tank volume: 250 L
  • Temperature: 28-31 °C (82-88 °F)
  • pH: 5.5-7.5 (captive-bred strains tolerate 6.0-7.0, up to 7.5 if stable)
  • GH: 2-10 °dGH (soft water)
  • Group size: at least 5 individuals
  • Lifespan: 8-12 years

Diet

An omnivore. Wild discus consume algae, plant material and detritus together with small invertebrates. In the aquarium, captive strains take a varied diet of frozen and prepared foods.

Compatibility

A peaceful, social cichlid best kept in a group in the middle of the tank. It pairs well with warm-water, soft-water companions such as cardinal tetra, rummy-nose tetra and Sterbai Corydoras, plus a bristlenose pleco; tiger barbs and aggressive cichlids should be avoided.

Breeding

A substrate spawner. Both parents provide highly developed brood care and produce a skin secretion ("discus milk") on which the larvae feed during their first weeks. Captive breeding of color strains is considered advanced.

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Marlboro Red Discus Care Guide | Aquairi