Tompot Blenny

Overview

The Tompot Blenny is a robust, bottom-dwelling fish known for its territorial nature and distinctive appearance. Often described as having a "doggish" personality, these fish are known to defend their chosen crevices against intruders, sometimes even approaching divers.

Distribution & habitat

This species is found in the northeastern Atlantic Ocean, ranging from Scotland to Morocco, as well as throughout the Mediterranean and Black Seas. They prefer rocky substrates, often inhabiting holes, crevices, or areas among boulders and seaweed in shallow coastal waters.

Appearance

As one of the largest blennies, it can reach up to 30 cm in length. It features an elongated, scaleless body covered in mucus, typically colored yellow-brown or greenish with seven or more dark vertical bars. Key identifying features include a prominent, branched tentacle above each eye and bicolored eyes that are brown on top and white below.

Biology & behavior

Lacking an air bladder, the Tompot Blenny remains strictly on the seabed. They are primarily active during dawn and dusk. Males are particularly territorial, especially during the breeding season, and may occupy the same crevice for several years.

Feeding

This species is an omnivore that feeds primarily on various benthic invertebrates, including crustaceans, mollusks, echinoderms, and annelids, often supplementing its diet with algae.

Reproduction

During the spring, males establish nests in crevices and attract females. The male guards the adhesive, demersal eggs until they hatch, often displaying aggressive behavior to protect the site and offspring.