Marquesan rockstripper – Alticus simplicirrus

Alticus simplicirrus, commonly known as the “Alticus simplicirrus,” is a species of fish belonging to the family Blenniidae. These fish are notable for their unique adaptations to life in the intertidal zone, a challenging environment characterized by fluctuating water levels and varying salinity.

Description & Characteristics

Alticus simplicirrus is a small fish, reaching a maximum size of 12.0 cm. Their bodies are elongated and somewhat compressed laterally, with a distinctive head shape and prominent eyes. They possess a prominent dorsal fin that extends nearly the length of their back, while their anal fin is located toward the rear of the body. The overall coloration of Alticus simplicirrus can vary depending on factors such as their environment and individual age, ranging from shades of brown to grayish-green.

Habitat and Occurrence

Alticus simplicirrus is a species that thrives in the intertidal zone, particularly in rocky and coral reef environments. These fish are typically found clinging to rocks and other substrates, using their pelvic fins as suction cups for stability in the face of wave action and receding tides. The distribution of Alticus simplicirrus encompasses the tropical and subtropical regions of the Indo-Pacific Ocean, making them a common sight in coastal areas within this vast expanse.

Taxonomy

Alticus simplicirrus is classified within the Class: Teleostei, Order: Blenniiformes, and Family: Blenniidae. This family is diverse, encompassing numerous species of blennies that exhibit a wide range of adaptations to various marine environments. Their taxonomic placement reflects their evolutionary history and shared characteristics with other blenniid species.

Feeding

Alticus simplicirrus are primarily carnivorous, relying on a diet of small invertebrates, such as crustaceans and mollusks. They are opportunistic feeders, actively foraging for food in the intertidal zone, utilizing their sharp teeth to grasp and consume their prey. Their feeding habits are closely linked to the availability of food in their immediate environment, which can vary depending on tidal cycles and other environmental factors.