How to Identify Redtail Catfish

To identify Redtail Catfish (Phractocephalus hemioliopterus), look at these key features.

Physical Characteristics

Body shape

elongated

Coloration

Distinctive dark grey to black dorsal surface, white to cream ventral surface, and a vibrant orange-red caudal fin (tail). A prominent white or cream stripe runs laterally from behind the operculum to the caudal peduncle.

Scale type

none

Mouth position

terminal

Distinctive features

Large, broad head with a wide mouth, Three pairs of barbels: one pair of long maxillary barbels extending past the pectoral fins, and two pairs of shorter mental barbels on the chin, Vibrant orange-red caudal fin, Prominent white lateral stripe

Dorsal fin

Short, high, and triangular, typically with one spine and 6-7 soft rays.

Tail fin

Deeply forked, with a striking orange-red coloration.

Pectoral fin

Relatively small but strong, with a serrated spine.

Distinctive fins

Adipose fin is present and relatively large.

Identification Tips

1. 1

   Coloration

   The most striking feature is the bright orange-red caudal fin, contrasting sharply with the dark grey/black body and white belly. A distinct white lateral stripe is also key.

2. 2

   Head and Barbels

   Possesses a very broad, flattened head and three pairs of barbels, with the maxillary pair being exceptionally long.

3. 3

   Body Shape

   Robust, elongated body that can reach impressive sizes.

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