How to Identify Sooty Grunter

To identify Sooty Grunter (Hephaestus fuliginosus), look at these key features.

Physical Characteristics

Body shape

compressed

Coloration

Generally dark, ranging from olive-brown to almost black on the back and flanks, fading to a lighter, often yellowish or silvery belly. Coloration can vary significantly depending on habitat, diet, and mood. Juveniles may exhibit faint vertical bars or spots that fade with age.

Scale type

ctenoid

Mouth position

terminal

Distinctive features

Deep, compressed body, Large, prominent eyes, Thick, fleshy lips, Slightly concave head profile, Pronounced grunting sound when stressed

Dorsal fin

Single dorsal fin with 11-14 strong spines and 10-13 soft rays. The spiny and soft-rayed portions are continuous but deeply notched.

Tail fin

Slightly emarginate to truncate caudal fin.

Pectoral fin

Moderately sized pectoral fins.

Distinctive fins

Anal fin with 3 spines and 8-10 soft rays. Pelvic fins are thoracic, located directly below the pectoral fins.

Identification Tips

1. 1

   Coloration

   Look for the characteristic dark, 'sooty' body color, which can range from olive-brown to black, often with a lighter belly.

2. 2

   Body Shape

   Observe the deep, compressed body and the slightly concave head profile.

3. 3

   Fins

   Note the continuous but deeply notched dorsal fin with strong spines.

4. 4

   Sound

   If handled, listen for the distinctive grunting sound produced by the fish.

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