Como identificar Redtail Catfish

Para identificar Redtail Catfish (Phractocephalus hemioliopterus), observe estas características principais.

Características físicas

Formato do corpo

elongated

Coloração

Distinctive tri-color pattern. The dorsal surface is dark brown to black, transitioning to a white or cream-colored belly. The most striking feature is the bright red-orange caudal (tail) fin, which gives it its common name. Juveniles may have more pronounced black spots on the body.

Tipo de escama

none

Posição da boca

terminal

Características distintivas

Large, broad, and flattened head, giving it a 'phractocephalus' (meaning 'helmet head') appearance., Three pairs of barbels: one long pair on the maxilla (upper jaw) extending past the pectoral fins, and two shorter pairs on the chin., Adipose fin present, typical of catfishes., Large, wide mouth., Absence of scales.

Nadadeira dorsal

Single, relatively small dorsal fin with a strong, serrated spine.

Nadadeira caudal

Large, deeply forked caudal fin, typically bright red-orange.

Nadadeira peitoral

Large, powerful pectoral fins, each with a strong, serrated spine.

Nadadeiras características

The vibrant red-orange caudal fin is the most distinguishing fin characteristic.

Dicas de identificação

1. 1

   Coloration

   Look for the unmistakable tri-color pattern: dark back, white belly, and bright red-orange tail fin. This is the most reliable visual identifier.

2. 2

   Head Shape

   The broad, flattened, and somewhat 'helmet-like' head is characteristic of the genus Phractocephalus.

3. 3

   Barbels

   Observe the three pairs of barbels, especially the very long maxillary barbels that extend well beyond the pectoral fins.

4. 4

   Size

   Adults are very large, reaching up to 1.8 meters (6 feet) in length and over 80 kg (176 lbs) in weight, making them one of the largest freshwater catfishes.

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