Cara Mengenal Pasti Red-bellied Piranha

Untuk mengenal pasti Red-bellied Piranha (Pygocentrus nattereri), perhatikan ciri-ciri utama berikut.

Ciri-ciri Fizikal

Bentuk badan

compressed

Warna

Adults typically display a silvery-grey body with a distinct reddish-orange coloration on the belly, extending from the throat to the anal fin. The operculum (gill cover) often has a golden or reddish sheen. Juveniles are more silvery with dark spots on their flanks, which fade with age. The dorsal fin is usually dark, and the caudal fin is often dark-edged.

Jenis sisik

cycloid

Kedudukan mulut

terminal

Ciri tersendiri

Deep, laterally compressed body, Prognathous lower jaw with interlocking, razor-sharp, triangular teeth, Reddish-orange belly coloration in adults, Strong, muscular build

Sirip dorsal

Single, relatively short-based dorsal fin, typically with 16-18 rays.

Sirip ekor

Forked caudal fin, often with a dark terminal band.

Sirip pektoral

Well-developed pectoral fins, positioned low on the body.

Sirip tersendiri

Adipose fin present, characteristic of Characiformes.

Petua Pengenalan

1. 1

   Body Shape and Coloration

   Look for a deep, compressed body with a silvery-grey base color and the characteristic reddish-orange belly in adults. Juveniles will have dark spots.

2. 2

   Dentition

   The most definitive feature is the powerful, prognathous lower jaw armed with a single row of triangular, razor-sharp, interlocking teeth in both jaws. These teeth are visible even when the mouth is closed.

3. 3

   Adipose Fin

   Presence of a small, fleshy adipose fin between the dorsal and caudal fins, a characteristic of the Characiformes order.

4. 4

   Schooling Behavior

   Often observed in schools, especially when young, which can aid in identification in their natural habitat.

Terokai Red-bellied Piranha