How to Identify Redtail Catfish

To identify Redtail Catfish (Hemibagrus wyckii), look at these key features.

Physical Characteristics

Body shape

elongated

Coloration

Adults typically exhibit a dark, often uniformly black or dark grey body, contrasting sharply with a vibrant reddish-orange to deep red caudal fin. Juveniles may have a lighter body coloration.

Scale type

none

Mouth position

terminal

Distinctive features

Robust, elongated body, Large, broad head with a wide mouth, Four pairs of prominent barbels (one maxillary, one nasal, two mandibular), Adipose fin present and relatively large, Deeply forked caudal fin with striking red/orange coloration

Dorsal fin

Short-based, with a strong, serrated spine and 7-8 soft rays. The spine can be locked upright.

Tail fin

Deeply forked, with the upper and lower lobes often equal in length. Distinctive reddish-orange to deep red coloration.

Pectoral fin

Large and powerful, each with a strong, serrated spine and 10-12 soft rays. These spines are venomous.

Distinctive fins

Presence of a well-developed adipose fin. Pelvic fins are relatively small.

Identification Tips

1. 1

   Caudal Fin Coloration

   The most distinguishing feature is the bright reddish-orange to deep red caudal (tail) fin, which contrasts sharply with the dark body.

2. 2

   Body Shape and Size

   A large, robust, and elongated body, reaching lengths of up to 80 cm (31.5 inches) and weights exceeding 15 kg (33 lbs) in the wild. Captive specimens can also grow very large.

3. 3

   Head and Mouth

   Possesses a broad, flattened head with a very wide, terminal mouth, indicative of its predatory nature.

4. 4

   Barbels

   Four pairs of prominent barbels around the mouth, which are sensory organs used for detecting food in low light or turbid conditions.

5. 5

   Dorsal and Pectoral Spines

   Presence of strong, serrated spines in the dorsal and pectoral fins. These spines are venomous and can inflict painful wounds.

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