Rummy-nose Tetra

Hemigrammus bleheri

Rummy-nose Tetra (Hemigrammus bleheri) — Easy care, Peaceful, under Tetra & Characin. Minimum tank in the app: 19.8 US gal min; aim for 75–81°F and pH 5.5–7.5. Rummy-nose Tetras are ideal for aquarists seeking lively, social fish that thrive in groups.

Rummy-nose Tetra (Hemigrammus bleheri) in a planted freshwater aquarium
Care levelEasy
TemperamentPeaceful
Min tank size19.8 US gal min
pH range5.5–7.5
Temperature75–81°F
Max size2.0 in (5.0 cm)
Captive lifespan4–8 years
SchoolingYes · 6+ recommended

Captive lifespan reflects typical experience in a home aquarium, not maximum recorded age; genetics, sourcing, and care vary.

Natural distribution

Mostly South America

  • South America

Regional colours match the stocking calculator’s origin map.

Rummy-nose Tetra Tank Setup

Create a balanced environment that offers both open swimming areas and dense vegetation or driftwood for shelter. A soft, dark substrate enhances their vibrant coloration, while subdued lighting helps reduce stress. Ensure the tank has gentle water flow to cater to their mid-swimming habits, allowing them to navigate freely without excessive current.

What Do Rummy-nose Tetras Eat?

Rummy-nose Tetras are quick feeders, so offer small, varied foods to accommodate their rapid eating style. Be mindful of feeding competition, as faster or more dominant fish may outcompete them for food.

Rummy-nose Tetra Tank Mates

These tetras are best kept with similarly sized, non-aggressive species such as smaller corydoras or peaceful barbs. Avoid larger or overly boisterous tank mates that may intimidate them. Within their own species, maintaining a group of at least six is crucial to prevent any isolation or stress, as they rely on the presence of their school for security.

Are Rummy-nose Tetras Good for Beginners?

In App-aquatic we file this under easy care. That still means a cycled tank, realistic stocking, and parameters that do not swing every weekend. Aquarists often underestimate the importance of keeping Rummy-nose Tetras in appropriate group sizes, leading to stress and poor health. neglecting water quality and parameters can result in detrimental effects; sudden changes may trigger illness.

Guides that pair with this fish

Browse species guides · Water parameters cheat sheet

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