Rummynose Tetra Identification Guide
Identify the Rummynose Tetra by its bright red nose, silvery body, and black-and-white striped tail.
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Key identification features
- Slender, torpedo-shaped, silvery-translucent body
- Bright red to crimson coloration concentrated on the head and nose, fading toward the body
- Tail fin marked with alternating horizontal black and white stripes
- Thin, dark horizontal line sometimes visible running along the lower body toward the tail
- Clear, unmarked dorsal and anal fins
- Small adult size around 1.75-2 inches (4.5-5 cm)
Common look-alikes
- Rummynose Tetra (Hemigrammus bleheri) and the True/Firehead Rummynose (Petitella georgiae) look nearly identical but the latter's red coloring extends slightly further back past the eye and its tail stripes are less crisp.
- Head-and-tail-light Tetra has a red-gold eye spot and glowing tail spot rather than a solid red nose and striped tail.
- Bloodfin Tetra lacks the red nose entirely, showing only red-tinted fins on an otherwise silver body.
Where you'll see one
Native to the clearwater and blackwater tributaries of the Amazon basin, particularly around the Rio Negro and Orinoco drainages, where it forms large, tightly synchronized schools over sandy substrates amid submerged wood and leaf litter.
Frequently asked questions
How do I confirm a fish is a Rummynose Tetra and not a Bloodfin Tetra?
Check the nose: Rummynose Tetras have a solid red face and snout, while Bloodfin Tetras have a plain silver head with only reddish-tinted fins.
What tail pattern helps confirm a Rummynose Tetra?
Look for crisp, alternating black-and-white horizontal bands on the tail fin, a pattern shared by only a few similar red-nosed tetra species.