The Spotlight Goby, Elacatinus louisae, is a small, brightly colored fish found in the western Atlantic Ocean. Its striking appearance and relatively common occurrence have made it a popular choice for saltwater aquariums.
Description & Characteristics
The Spotlight Goby, Elacatinus louisae, is a small fish, reaching a maximum size of 3.8 cm. Its most notable feature is its striking coloration. The body is typically a vibrant yellow or orange, with a distinct black “spotlight” or “eye” marking on the upper part of its body. This dark marking is surrounded by a bright white ring, which further enhances its visibility. The fins are generally transparent or faintly colored, and the eyes are relatively large and black.
Habitat and Occurrence
The Spotlight Goby, Elacatinus louisae, is typically found in the western Atlantic Ocean, specifically in the Caribbean Sea and the Gulf of Mexico. It prefers shallow, rocky reefs and coral formations, typically inhabiting depths between 13.0 and 45.0 meters. This range places it within the mesophotic zone, a marine environment characterized by reduced light penetration and a diverse array of specialized species.
Taxonomy
The Spotlight Goby, Elacatinus louisae, belongs to the family Gobiidae, which encompasses a diverse range of small, bottom-dwelling fish. They are classified within the Order Gobiiformes, a group known for their distinctive pelvic fins, which are fused together to form a suction cup-like structure. This adaptation aids in their ability to cling to surfaces and navigate in their complex habitats. They are further categorized within the Class Teleostei, a large group of bony fish that encompasses the majority of fish species.
Feeding
The Spotlight Goby, Elacatinus louisae, is a carnivorous fish, feeding primarily on small invertebrates such as copepods and zooplankton. It uses its sharp teeth to capture and consume its prey, playing a vital role in controlling the populations of these small organisms within its ecosystem.
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