Come identificare Redtail Catfish

Per identificare Redtail Catfish (Phractocephalus hemioliopterus), osserva queste caratteristiche chiave.

Caratteristiche fisiche

Forma del corpo

elongated

Colorazione

The dorsal surface is typically dark grey to black, transitioning to a white or cream-colored ventral surface. The most striking feature is the bright orange to red coloration of the caudal fin (tail) and often the adipose fin, which gives the fish its common name. Juveniles may have more pronounced black spots or blotches on their flanks, which tend to fade with age.

Tipo di squame

none

Posizione della bocca

terminal

Caratteristiche distintive

Large, broad, flattened head, Three pairs of prominent barbels: one pair of maxillary barbels extending past the pectoral fins, and two pairs of mental barbels on the chin, Bright orange to red caudal fin, Absence of scales, Large, wide mouth

Pinna dorsale

Short-based, with a single strong spine and 6-7 soft rays. Positioned relatively far forward on the body.

Pinna caudale

Deeply forked, with a vibrant orange to red coloration.

Pinna pettorale

Large and powerful, with a strong, serrated spine and several soft rays. Used for propulsion and defense.

Pinne distintive

A prominent adipose fin is present, often also colored orange/red. Pelvic fins are relatively small.

Consigli per l'identificazione

1. 1

   Coloration

   The most definitive feature is the bright orange to red caudal fin, contrasting sharply with the dark grey/black dorsal and white ventral body.

2. 2

   Head Shape and Barbels

   Its broad, flattened head and three pairs of long, prominent barbels (especially the maxillary pair) are unmistakable.

3. 3

   Size

   Adults are massive, reaching lengths of up to 1.8 meters (6 feet) and weights exceeding 80 kg (176 lbs), making them one of the largest freshwater fish in South America.

Esplora Redtail Catfish