Bleeding Heart Tetra

Introduction

The Bleeding Heart Tetra is a stunning and peaceful freshwater fish, famous for the vivid red “heart-shaped” spot near its gills that gives it its name. Native to the Amazon River Basin, these fish are perfect for community aquariums and make a visual impact when kept in schools.

Scientific Name

Hyphessobrycon erythrostigma

Common Name

• Bleeding Heart Tetra

Water Quality and Temperature

• Temperature: 23°C – 28°C (73°F – 82°F)

• pH: 6.0 – 7.5

• Hardness: 4 – 12 dGH

• Prefers clean, soft, slightly acidic water with gentle filtration and some water movement

Feeding

• Omnivorous

• Will accept:

  • High-quality flakes and micro pellets

  • Frozen or live daphnia, brine shrimp, bloodworms

  • Occasional blanched vegetables

• Feed 1–2 times per day in small amounts they can consume in under 2 minutes

Tank Mates

• Peaceful community tank mates such as:

  • Other tetras (e.g., Rummy Nose, Cardinal)

  • Corydoras

  • Gouramis

  • Dwarf cichlids

• Avoid fin-nipping species or overly aggressive fish

Substrates and Tank Decorations

• Fine, dark substrate helps highlight their colors

• Use driftwood, rocks, and plenty of hiding spots

• Dim lighting with subdued tones mimics their natural habitat

• Open swimming areas are important as they are active swimmers

Suitable Plants

• Java Fern

• Amazon Sword

• Anubias

• Vallisneria

• Floating plants like Salvinia or Frogbit for shade

Sexing

• Males: More slender with longer dorsal and anal fins

• Females: Shorter fins and rounder body, especially when gravid

Breeding

• Egg scatterers

• Best done in a separate breeding tank with soft, acidic water and fine-leaved plants or spawning mops

• Remove adults after spawning to prevent egg-eating

• Fry hatch in 24–36 hours and require infusoria or liquid fry food initially

Maximum Size and Longevity

• Size: Up to 6–7 cm (2.5–3 inches)

• Lifespan: 5 – 6 years with proper care

General Information

Bleeding Heart Tetras are schooling fish and should be kept in groups of 6 or more to reduce stress and encourage natural behavior. They are ideal for aquarists seeking vibrant yet peaceful fish for planted or blackwater-style aquariums.

A Fun Fact

The red “heart” marking isn’t just for looks—it becomes more intense in healthy, well-cared-for fish, making it a great indicator of their well-being!