How to Identify Red Tetra

To identify Red Tetra (Hyphessobrycon flammeus), look at these key features.

Physical Characteristics

Body shape

compressed

Coloration

Silvery-grey anteriorly, transitioning to a vibrant red-orange on the posterior half of the body, including the caudal peduncle, caudal fin, and anal fin. Two distinct vertical black bars are present behind the operculum. The dorsal fin often has a reddish tint, and the adipose fin is typically clear or slightly reddish. Males are generally more intensely colored and slender than females, especially during breeding.

Scale type

cycloid

Mouth position

terminal

Distinctive features

Vibrant red-orange posterior body and fins, Two vertical black bars behind the gill cover, Small adipose fin

Dorsal fin

Single, relatively small, with a few rays, often with a reddish hue.

Tail fin

Forked, with the red coloration extending into the lobes.

Pectoral fin

Clear, small, and fan-shaped.

Distinctive fins

Anal fin is relatively long and deep, extending from the mid-body to the caudal peduncle, and is prominently red-orange. Pelvic fins are small and clear.

Identification Tips

1. 1

   Coloration

   Look for the distinct red-orange coloration on the posterior half of the body and fins, contrasting with a silvery anterior.

2. 2

   Black Bars

   Identify the two prominent vertical black bars located just behind the gill cover.

3. 3

   Body Shape

   Observe its compressed, somewhat elongated body shape, typical of many characins.

4. 4

   Fin Shape

   Note the relatively long and deep anal fin, which is also red-orange.

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