Red-backed paradisefish (Macropodus erythropterus)

Family: Osphronemidae

A semi-aggressive carnivore osphronemidae from South China and northern Vietnam — beginner-friendly.

Care parameters

Water temperature
18–26 °C
pH
6.5–7.5
GH hardness
5–15 dGH
Adult length
4.5–6.5 cm
Minimum tank
65 L
Water layer
Upper; surface-oriented
Difficulty
Easy
Temperament
Semi-aggressive; one male per tank
Origin
中国华南、越南北部

Species overview

Macropodus erythropterus is a Osphronemidae. In the aquarium it stays semi-aggressive. Plan on 4.5–6.5 cm of adult fish at 18–26 °C. Related profiles: Macropodus opercularis, Macropodus hongkongensis, Macropodus ocellatus.

Native biotope

Habitat
Clear streams, rivers and still waters
Flow
Still to very gentle water
Dissolved O₂
Tolerates low oxygen

Aquascape & hardware

Substrate
Dark fine gravel or sand
Hardscape
Driftwood, water-worn stones and shelters that mimic the native biotope
Plants
Mixed planting with open swimming lanes

Temperament, diet & tankmates

Schooling
Solitary, pairs or small groups
Diet
Carnivore; quality prepared foods with variety; regular frozen or live foods
Recommended tankmates
  • Amur False Gudgeon — Similar size and water needs
  • China-Bitterling — Similar size and water needs
  • Acanthorhodeus chankaensis — Similar size and water needs
Avoid keeping with
  • Its own males — Territorial fighting
  • Long-finned fish — Prone to fin nipping

Breeding & notes

Sexual dimorphism
Males are typically slimmer and more intensely colored; females fuller-bodied
Breeding method
Bubble nester; condition with rich foods and simulate seasonal changes

Frequently asked questions

Is Red-backed paradisefish easy to keep?

Difficulty: easy. Semi-aggressive; one male per tank. Solitary, pairs or small groups.

What temperature and water chemistry does Red-backed paradisefish need?

Aim for 18–26 °C. Standard heater to hold the mid-range steadily; community-standard range; verify locally.

How big does Red-backed paradisefish get, and what tank size?

Expect 4.5–6.5 cm as an adult, living upper; surface-oriented. A 65 L tank or larger gives it room.

What does Red-backed paradisefish eat?

Carnivore; quality prepared foods with variety; regular frozen or live foods. It forages naturally over dark fine gravel or sand, so let some food reach the bottom.

Can Red-backed paradisefish live with other fish?

Yes, with care. Semi-aggressive; one male per tank — pair it with Amur False Gudgeon — Similar size and water needs, China-Bitterling — Similar size and water needs, Acanthorhodeus chankaensis — Similar size and water needs and skip Its own males — Territorial fighting, Long-finned fish — Prone to fin nipping.

Where does Red-backed paradisefish come from?

Native to 中国华南、越南北部, where it lives in clear streams, rivers and still waters. Still to very gentle water; Tolerates low oxygen.

Does Red-backed paradisefish jump?

It can jump when startled — keep the tank tightly covered, especially at night and during maintenance.

How does Red-backed paradisefish breed?

Bubble nester; condition with rich foods and simulate seasonal changes. Males are typically slimmer and more intensely colored; females fuller-bodied.