Description
The Rummy Nose Tetra (Petitella bleheri, formerly Hemigrammus bleheri) is widely regarded as one of the best schooling fish in the freshwater aquarium hobby. Instantly recognizable by its bright red nose, silver body, and bold black-and-white striped tail, the Rummynose Tetra fish creates breathtaking synchronized movement when kept in groups. Few fish display schooling behavior as tight and mesmerizing as Rummy Nose Tetras, making them a top choice for planted and aquascaped aquariums.
Native to the Amazon River Basin, these Tetra fish inhabit soft, warm, slow-moving blackwater streams rich in plants and leaf litter. Three closely related tetras are sold as rummy nose tetras: Petitella bleheri, Petitella rhodostoma (formerly Hemigrammus rhodostomus), and Petitella georgiae. Among them, Petitella bleheri is the most vibrant and commonly preferred due to its intense red coloration and excellent schooling behavior.
Species note: The Rummy Nose Tetra is a South American tetra and is not the same fish as the Rummynose Rasbora (Sawbwa resplendens), a small cool-water cyprinid from Myanmar that shares the nickname. The two need very different water temperatures, so check which one you want before you buy.
One unique trait of the Rummy Nose Tetra is that the brightness of its red nose reflects overall health and water quality, making it a natural “indicator fish” for aquarium conditions, hence their name, Red Nose Tetra or Firehead Tetra.
A full-grown Rummynose Tetra reaches about 1.75–2 inches (4.5–5 cm) in length. Their sleek, torpedo-shaped bodies are silver with a slight translucent sheen, while the face glows a vivid crimson red. The tail features crisp horizontal black and white stripes that flash as the school moves together. Their small size and striking coloration make Rummynose Tetras perfect for medium to large community aquariums and planted tanks.
Rummy Nose Tetras are extremely peaceful schooling fish and should always be kept in groups of 8–10 or more. Larger schools result in tighter formation swimming, reduced stress, and stronger coloration. Excellent Rummy Nose Tetra tank mates include: Other tetras, Rasboras, Corydoras catfish, Dwarf cichlids (Rams, Apistogramma), Gouramis, Angelfish (in large tanks), shrimp, and snails. Avoid aggressive or highly boisterous fish that may disrupt their schooling behavior.
At Splashy Fish tropical fish store, our Rummy Nose Tetra for sale and other Tetras for sale are tank-bred, grown, and sold with love and care. Every fish is quarantined before listing, packed carefully, and shipped live within the USA from our Virginia-based fish store, backed by our live-arrival guarantee. Visit our fish store online or aquarium in Virginia for more high-quality freshwater fish for sale. We have a lot more fish available, such as betta fish for sale, aquatic plants for sale, freshwater shrimp for sale, and other aquarium supplies.
What You Can Expect From Rummy Nose Tetra
One of the tightest schooling fish in the aquarium hobby
Bright red nose that indicates excellent health
Peaceful and community-safe
Ideal for planted and aquascaped tanks
Small size with big visual impact
Beginner-friendly with stable water conditions
Rummy Nose Tetra Water Parameters
Tank Size: Minimum 20 gallons (larger preferred for schooling)
Temperature: 76°–82°F (24°–28°C)
pH: 5.5–7.0
Hardness: 1–8 dGH
Filtration: Gentle to moderate flow, well-oxygenated water
Rummy Nose Tetra Care Guidelines
Diet: Omnivorous. Feed high-quality micro pellets, flakes, and frozen foods such as brine shrimp, daphnia, and bloodworms. A varied diet enhances color and vitality.
Tank Setup: Heavily planted aquariums with open swimming areas, driftwood, and subdued lighting replicate their natural Amazon habitat.
Behavior: Highly social schooling fish. Larger groups create stunning synchronized swimming displays.
Visit here to explore more about How to Care for Rummy Nose Tetra.
Rummy Nose Tetra Frequently Asked Questions (FAQs)
How many Rummy Nose Tetra should I keep in a 20-gallon tank?
In a 20-gallon tank, you should keep at least 8–10 Rummy Nose Tetras, with 10–12 being ideal. Rummy Nose Tetras are tight-schooling fish, and larger groups reduce stress while enhancing their famous synchronized swimming behavior. A 20-gallon aquarium provides enough horizontal swimming space for a healthy, visually impressive school when water quality is well maintained.
Are Rummy Nose Tetras good for beginners?
Yes, Rummy Nose Tetras can be good for beginners, especially aquarists who understand the importance of stable water conditions. While they are peaceful and hardy once established, Rummy Nose Tetras are slightly sensitive to sudden changes in water parameters. Beginners who perform regular water changes and maintain proper temperature and filtration will find Rummy Nose Tetra care very manageable and rewarding.
Can I keep Rummy Nose Tetra with Betta fish?
Yes, Rummy Nose Tetras can live with Betta fish in most cases. Their peaceful temperament and fast, mid-water swimming style make them suitable Betta tank mates. To ensure compatibility, provide a tank of 20 gallons or larger, plenty of plants, and hiding spaces to reduce stress. Avoid keeping aggressive Betta individuals, and always monitor behavior during the initial introduction.
How big do Rummy Nose Tetras get?
Adult Rummy Nose Tetras grow to about 1.75–2 inches (4.5–5 cm). They stay small enough for a 20-gallon community tank but need open horizontal swimming space because they are active, fast-moving schooling fish.
Is the Rummy Nose Tetra the same as the Rummynose Rasbora?
No. The Rummy Nose Tetra (Petitella bleheri) is a South American tetra that needs warm, soft, acidic water around 76–82°F. The Rummynose Rasbora (Sawbwa resplendens) is a small cyprinid from Inle Lake in Myanmar that prefers cooler water around 64–72°F, so the two are not interchangeable.
