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Angelfish (Pterophyllum scalare) — fish compatible with discus
Compatible fish

Angelfish

Pterophyllum scalare

3/5 — Good

Description

Angelfish (Pterophyllum scalare) are South American cichlids genetically related to discus, native to the same Amazon basin. They can coexist with discus under specific conditions: a spacious tank, young specimens raised together, and trustworthy sources (parasite-free). Their elegant vertical silhouette offers a spectacular visual contrast with the rounded shape of discus.

🌍 Origin

The Amazon basin — Rio Negro, Rio Solimões, Peru, Brazil, Colombia. The same natural habitat as discus.

Appearance

A tall, laterally compressed body with very long dorsal and anal fins. Colors: wild (silver with black vertical stripes), altum, black, marbled, koi, platinum, veil. 15 cm long + up to 20–25 cm tall including the fins.

Recommended water parameters

pH
6.0-7.5
Temperature
26-30°C
TDS
80-300 ppm
GH
3-12
Size
15 cm (20–25 cm tall)
Lifespan
10–12 years
Min. group
At least 4–5 specimens or a single one

Compatibility with discus

CAUTION: Angelfish are frequent carriers of the flagellate Hexamita and other parasites dangerous to discus. MANDATORY rules: (1) tank min 300L, (2) young specimens raised together with the discus, (3) a verified source with strict 4–6 week quarantine, (4) AVOID breeding pairs, (5) do not mix ALTUM angelfish (wild) with domestic discus.

Care

Requires a TALL tank (min 50 cm) due to body height. Warm, clean, slightly acidic water. Tall plants (Vallisneria, Echinodorus) to mimic the natural habitat.

Feeding

Omnivore — premium pellets, bloodworms, brine shrimp, daphnia, shrimp. Feed 2x/day in small portions. Same diet as discus = easy to manage.

Behavior

Semi-aggressive. Establishes a clear hierarchy within the group. Breeding pairs become very territorial. In a group of 4–5+ the aggression dilutes.

💡 Practical tips

  • →Tank MINIMUM 300L and 50+ cm tall
  • →4–6 week quarantine mandatory — Hexamita risk
  • →Only young specimens raised together with the discus
  • →Avoid breeding pairs — they turn aggressive
  • →Do NOT mix with Altum angelfish (wild)

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