How to Identify Tompot Blenny

To identify Tompot Blenny (Parablennius gattorugine), look at these key features.

Physical Characteristics

Body shape

elongated

Coloration

Highly variable, ranging from mottled browns, greens, and reds to blend with their rocky surroundings. Often has irregular dark bands or blotches along the flanks. The belly is typically lighter. Coloration can change rapidly based on mood, environment, and breeding status.

Scale type

none

Mouth position

terminal

Distinctive features

Prominent, branched supraorbital tentacles (above each eye), which are a key identification feature., A series of smaller, unbranched tentacles on the anterior nostrils., Large eyes set high on the head., Thick, fleshy lips.

Dorsal fin

A single, long dorsal fin with 11-12 spines and 18-20 soft rays. There is a distinct notch between the spiny and soft-rayed portions.

Tail fin

Rounded caudal fin.

Pectoral fin

Large, fan-like pectoral fins.

Distinctive fins

Pelvic fins are jugular (located anterior to the pectoral fins) and consist of one spine and two soft rays, often appearing filamentous.

Identification Tips

1. 1

   Supraorbital Tentacles

   Look for the distinctive, highly branched tentacles above each eye. This is the most reliable feature to distinguish it from other blennies.

2. 2

   Dorsal Fin

   Note the single, long dorsal fin with a clear notch separating the spiny and soft-rayed portions.

3. 3

   Body Shape and Coloration

   Elongated body with mottled brown/green/red coloration, often with irregular dark bands. Color can vary significantly.

4. 4

   Size

   Adults typically reach 20-30 cm (8-12 inches) in length, making them one of the larger blenny species in their range.

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