How to Identify Natal Stumpnose

To identify Natal Stumpnose (Rhabdosargus natalensis), look at these key features.

Physical Characteristics

Body shape

compressed

Coloration

Silvery body, often with a yellowish tinge on the fins, particularly the caudal fin. Juveniles may exhibit faint vertical bars that fade with age. A dark blotch may be present at the origin of the lateral line.

Scale type

ctenoid

Mouth position

terminal

Distinctive features

Deep, compressed body, Relatively small mouth with strong incisor-like teeth at the front of the jaws, followed by molariform teeth, Prominent 'stump-like' snout profile, Yellowish caudal fin

Dorsal fin

Single dorsal fin with 11-12 spines and 11-13 soft rays. The spinous portion is longer than the soft-rayed portion.

Tail fin

Moderately forked caudal fin, often with a yellowish hue.

Pectoral fin

Long and pointed pectoral fins.

Distinctive fins

Anal fin with 3 spines and 10-11 soft rays. Pelvic fins are thoracic.

Identification Tips

1. 1

   Snout Profile

   Look for the characteristic blunt, 'stump-like' snout, which gives the fish its common name.

2. 2

   Teeth

   Observe the strong incisor-like teeth at the front of the jaws, followed by molariform teeth, adapted for crushing shells.

3. 3

   Caudal Fin Coloration

   The yellowish tint on the caudal fin is often a good indicator, especially in adults.

4. 4

   Body Shape

   Its deep, compressed body distinguishes it from more elongated sparids.

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