How to Identify Red-tailed Brycon

To identify Red-tailed Brycon (Brycon erythropterum), look at these key features.

Physical Characteristics

Body shape

torpedo

Coloration

Dorsal surface typically dark olive to brownish-grey, fading to silvery-white on the flanks and belly. The most distinctive feature is the bright red to orange coloration on the caudal fin (tail fin), and often on the anal and pectoral fins, especially in adults. Juveniles may have a less intense coloration.

Scale type

cycloid

Mouth position

terminal

Distinctive features

Robust, fusiform body, laterally compressed., Large, prominent scales., Distinctive red to orange caudal fin., Adipose fin present., Strong, conical teeth adapted for an omnivorous diet.

Dorsal fin

Single, relatively short dorsal fin located mid-body, with 10-11 rays.

Tail fin

Deeply forked caudal fin, bright red to orange, providing powerful propulsion.

Pectoral fin

Moderately sized, typically reddish or orange, located low on the body.

Distinctive fins

Anal fin is relatively long, with 25-29 rays, often with a reddish hue. Pelvic fins are small and located abdominally.

Identification Tips

1. 1

   Caudal Fin Coloration

   The most reliable identifier is the vibrant red to orange coloration of the tail fin, which is particularly striking in adult specimens.

2. 2

   Body Shape and Size

   Its large, torpedo-shaped body, reaching up to 80 cm (31.5 inches) in standard length and weighing over 10 kg (22 lbs), distinguishes it from many other characins.

3. 3

   Scale Pattern

   Observe the relatively large, cycloid scales covering its body, which contribute to its silvery sheen.

4. 4

   Mouth and Teeth

   The terminal mouth with strong, conical teeth is indicative of its omnivorous diet, including fruits and seeds.

Explore Red-tailed Brycon