Four-fingered lipsucker – Andamia tetradactylus

Four-fingered lipsucker, Andamia tetradactylus, Andamia tetradactylus
Size: 10.5 cm
Water Type: Marine

Andamia tetradactylus, commonly known as the Fourfingered Blenny, is a species of fish belonging to the family Blenniidae. These small, colorful fish are found in various parts of the Indo-Pacific region and are characterized by their unique morphology and behavior.

Description & Characteristics

Andamia tetradactylus is a relatively small fish, reaching a maximum size of 10.5 cm. It has a distinctive elongated body with a compressed, somewhat flattened shape. The fourfingered blenny features a prominent, fleshy tentacle on its snout, which is unique among blennies. The head of the fish is relatively large in proportion to the body and sports a wide, slightly upturned mouth. This mouth is armed with small, sharp teeth, adapted for grabbing and consuming various prey items. The coloration of Andamia tetradactylus can vary depending on the individual and its habitat. Typical colors range from shades of brown to yellow-green, with some individuals showcasing darker brown markings or stripes. These markings often serve as camouflage, allowing the fish to blend in with their surroundings.

Habitat and Occurrence

Andamia tetradactylus is a primarily reef-associated species, typically inhabiting coral reefs and rocky shores in shallow, inshore waters. These fish are commonly found in the tropical Indo-Pacific region, ranging from the Red Sea and East Africa to the Pacific Ocean. Andamia tetradactylus is often observed in the intertidal zone, where it can withstand the fluctuations of tides and exposure to air. These fish can also be found in the shallow subtidal zone, venturing into depths of up to 20 meters. The presence of Andamia tetradactylus on coral reefs and rocky shores highlights its vital role in the marine ecosystem.

Taxonomy

The species Andamia tetradactylus belongs to the Class: Teleostei, Order: Blenniiformes, and Family: Blenniidae. The Teleostei represent a large and diverse group of bony fish, encompassing a vast majority of fish species found worldwide. Blenniiformes, the order to which Andamia tetradactylus belongs, includes the blennies, combtooth blennies, and clingfishes, among others. These fish are characterized by their elongated bodies, prominent pectoral fins, and often, a lack of pelvic fins. The Blenniidae family, which includes the Andamia tetradactylus, comprises over 400 species, showcasing a wide range of adaptations and ecological niches.

Feeding

Andamia tetradactylus is a carnivorous fish, primarily feeding on small invertebrates. These include crustaceans, polychaetes (worms), and small fish. The fish utilizes its sharp teeth and quick reflexes to capture prey. This feeding behavior plays a crucial role in maintaining the balance of the coral reef ecosystem by controlling populations of smaller invertebrates. Andamia tetradactylus is often observed foraging among the crevices and nooks of the reef, carefully seeking out its prey.

Associated Species

Image References

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