How to Identify Rock Hind

To identify Rock Hind (Epinephelus adscensionis), look at these key features.

Physical Characteristics

Body shape

elongated

Coloration

Typically pale brown to reddish-brown, covered with numerous small, irregular reddish-brown spots. Five irregular dark blotches are often present along the dorsal side, extending onto the dorsal fin. A prominent black saddle-like blotch is usually present on the caudal peduncle, just anterior to the caudal fin. The fins are generally spotted.

Scale type

ctenoid

Mouth position

terminal

Distinctive features

Small, irregular reddish-brown spots covering the entire body and fins., Five irregular dark blotches along the dorsal side., Prominent black saddle-like blotch on the caudal peduncle., Three dark spots on the snout, forming a triangle., Pectoral fins are relatively short and rounded.

Dorsal fin

Single dorsal fin with 11 spines and 16-18 soft rays. The spinous portion is lower than the soft-rayed portion.

Tail fin

Rounded caudal fin.

Pectoral fin

Rounded, relatively short pectoral fins, typically 1.5-1.8 times in head length.

Distinctive fins

Pelvic fins are shorter than pectoral fins and do not reach the anus.

Identification Tips

1. 1

   Coloration and Spotting

   Look for the pale brown to reddish-brown body covered with numerous small, irregular reddish-brown spots. This is a key distinguishing feature.

2. 2

   Dorsal Blotch Pattern

   Observe the five irregular dark blotches along the dorsal side, which often extend onto the dorsal fin.

3. 3

   Caudal Peduncle Spot

   The prominent black saddle-like blotch on the caudal peduncle (just before the tail fin) is a very reliable identifier.

4. 4

   Snout Spots

   Three dark spots on the snout, forming a triangular pattern, are often visible and helpful for identification.

5. 5

   Fin Shape

   Note the rounded caudal fin and relatively short, rounded pectoral fins.

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