Rummy Nose Tetra (Hemigrammus rhodostomus) in a planted freshwater aquarium
Peaceful Moderate Schooling

Rummy Nose Tetra

Hemigrammus rhodostomus

Minimum Tank

20 Gallons

Adult Size

2.5 inches

Temperature

75-84°F (24-29°C)

pH Range

5.5-7.0

Lifespan

6 years

School Size

8+ fish

About Rummy Nose Tetra

The rummy-nose tetra is a sleek, torpedo-shaped schooling fish from the blackwater rivers of the Amazon basin. It is instantly recognizable by its brilliant red nose and face, which extends from the mouth to just behind the gill cover, contrasted with a distinctly striped black-and-white tail. The intensity of the red nose coloring serves as a reliable indicator of water quality and fish health, fading noticeably when conditions deteriorate. Rummy-nose tetras are considered one of the tightest schooling fish in the hobby, swimming in remarkably synchronized formations that rival marine species. This makes them a top choice for aquascaping enthusiasts seeking dramatic schooling effects.

Care Requirements

Tank Setup

  • • Minimum 20-gallon tank required
  • • Temperature: 75-84°F (24-29°C)
  • • pH: 5.5 - 7.0
  • • Category: Tetra

Diet & Feeding

  • • Diet type: Omnivore
  • • Feed 1-2 times daily
  • • Varied diet recommended

Tank Mate Compatibility

Compatible With

🐟 Corydoras
🐟 Rasboras
🐟 Discus
🐟 Angelfish

Avoid Keeping With

⚠️
Aggressive Fish Not compatible
⚠️
Poor Water Quality Not compatible

Care Tips

Expert Tips

Rummy-nose tetras need stable, clean water with low nitrates to maintain their vivid red nose coloring. Keep them in groups of at least ten for the best schooling behavior in soft, slightly acidic water at 75-82°F. They are more sensitive to water quality than many tetras, so perform consistent weekly water changes and avoid adding them to uncycled tanks. Their red nose serves as a living water quality test: if it fades, check your parameters immediately. Provide moderate flow and open swimming areas along with planted sections for security. Feed varied foods including quality flakes, micro-pellets, and frozen daphnia.

Quick Facts

76L

Min Tank (20gal)

6cm

Adult Size (2.5")

6yr

Lifespan

8+

Min School

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Frequently Asked Questions

What size tank does a Rummy Nose Tetra need?

A Rummy Nose Tetra needs a minimum tank size of 20 gallons (76 litres). They should be kept in schools of at least 8.

What water parameters does a Rummy Nose Tetra need?

Rummy Nose Tetra thrive in water between 75-84°F (24-29°C) with a pH of 5.5-7.0.

Are Rummy Nose Tetra easy to care for?

Rummy Nose Tetra are considered moderate to care for. They are peaceful fish with a lifespan of about 6 years.

How big do Rummy Nose Tetra get and what do they eat?

Rummy Nose Tetra reach about 2.5 inches and are omnivores. Rummy-nose tetras need stable, clean water with low nitrates to maintain their vivid red nose coloring. Keep them in groups of at least ten for the best schooling behavior in soft, slightly acidic water at 75-82°F. They are more sensitive to water quality than many tetras, so perform consistent weekly water changes and avoid adding them to uncycled tanks. Their red nose serves as a living water quality test: if it fades, check your parameters immediately. Provide moderate flow and open swimming areas along with planted sections for security. Feed varied foods including quality flakes, micro-pellets, and frozen daphnia.