Galapagos gurnard – Prionotus miles

Galapagos gurnard, , Prionotus miles
Size: 25 cm
Water Type: Marine

Prionotus miles, commonly known as the miles searobin, is a species of fish belonging to the family Triglidae, commonly known as searobins. This species is found in various marine environments and is characterized by its distinctive features and ecological role.

Description and Characteristics

The miles searobin, Prionotus miles, is a relatively small fish, reaching a maximum size of 25.0 cm. Its body is elongated and compressed laterally, giving it a streamlined shape suitable for its benthic lifestyle. This species exhibits a distinct coloration pattern, typically a reddish-brown or brownish-grey with dark blotches or spots covering its body.

One of the most striking features of the miles searobin is its large, prominent head. Its eyes are situated on the top of its head, allowing for excellent visual surveillance of its surroundings. Additionally, the miles searobin possesses three fleshy appendages, or “fingers”, on its pectoral fins. These “fingers” are highly sensitive and are used to probe the seafloor for prey.

Habitat and Occurrence

Prionotus miles is a demersal fish, meaning it typically inhabits the bottom of the ocean floor. This species is commonly found in depths ranging from the intertidal zone to approximately 200 meters. They are often found on sandy or muddy bottoms, among rocks, or in areas with seaweed and coral reefs. Their distribution encompasses various marine zones, including the neritic zone, which is the area of the ocean extending from the shoreline to the edge of the continental shelf. The miles searobin is particularly prevalent in the western Atlantic Ocean, from the Gulf of Mexico to the Caribbean Sea.

Taxonomy

The species Prionotus miles belongs to the Class: Teleostei, which is a diverse group of ray-finned fishes. Teleostei encompasses over 20,000 species, making it the most abundant class of vertebrates. The miles searobin is also classified within the Order: Perciformes, which includes a vast array of fishes such as bass, perch, and groupers. This order is the most diverse group of bony fishes, containing over 10,000 species. Finally, Prionotus miles is a member of the Family: Triglidae, which is a family of fish commonly known as searobins. This family consists of approximately 100 species, distinguished by their large heads, prominent eyes, and fleshy pectoral appendages.

Feeding

Prionotus miles is a carnivorous fish, primarily feeding on a variety of invertebrates that inhabit the seafloor. Their diet includes crustaceans, worms, mollusks, and small fishes. They use their sensitive “fingers” on their pectoral fins to locate prey buried in the sediment. The miles searobin’s diet contributes to the balance and stability of the benthic ecosystems they inhabit.

Associated Species

Image References

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