So bestimmen Sie Wirrah

Um Wirrah (Acanthistius serratus) zu bestimmen, achten Sie auf diese Schlüsselmerkmale.

Körperliche Merkmale

Körperform

compressed

Färbung

Highly variable, typically mottled brown, green, or reddish-brown with irregular darker blotches and spots, providing excellent camouflage. The belly is usually lighter. Some individuals may exhibit a yellowish tinge.

Schuppentyp

ctenoid

Maulstellung

terminal

Besondere Merkmale

Robust, deep body., Large, protractile mouth with numerous small, sharp teeth., Prominent eyes., Strong, serrated operculum (gill cover)., Often has a dark blotch on the operculum., The body is covered in small, ctenoid scales.

Rückenflosse

Single, long dorsal fin with 11-12 strong, venomous spines followed by 15-17 soft rays. The spiny and soft-rayed portions are continuous.

Schwanzflosse

Rounded caudal fin.

Brustflosse

Large, rounded pectoral fins.

Auffällige Flossen

Anal fin with 3 strong spines and 8-9 soft rays. Pelvic fins are thoracic, located below the pectoral fins, with 1 spine and 5 soft rays.

Bestimmungstipps

1. 1

   Body Shape and Coloration

   Look for a robust, deep-bodied fish with highly variable mottled brown, green, or reddish-brown patterns that blend with rocky environments. Irregular darker blotches and spots are common.

2. 2

   Dorsal Fin

   Note the single, long dorsal fin with 11-12 prominent, strong spines in the anterior portion, followed by soft rays. The spiny part is continuous with the soft-rayed part.

3. 3

   Mouth and Operculum

   Observe the large, protractile mouth and the strong, serrated edge of the operculum (gill cover), often with a dark blotch.

4. 4

   Habitat

   Wirrah are almost exclusively found in rocky reef environments, often lurking in crevices or under ledges.

Wirrah entdecken