The Black-spotted Goby, Black-spotted Sand-goby, scientifically known as Istigobius nigroocellatus, is a small, fascinating fish species found in the Indo-Pacific region. This goby exhibits striking markings and a unique lifestyle, making it an intriguing subject for marine enthusiasts and researchers alike.
Description & Characteristics
Istigobius nigroocellatus is characterized by its relatively small size, reaching a maximum length of 6.5 cm. The most notable feature of this goby is its distinctive black spots scattered across its body, particularly prominent on its dorsal fin. These spots are often surrounded by a pale halo, enhancing their visibility. The overall body color can range from a pale brown to a yellowish-brown, with the intensity of the coloration varying based on individual and environmental factors. The Black-spotted Goby’s body is elongated and slightly compressed laterally, providing it with a streamlined appearance, well-suited for navigating the intricacies of its habitat.
Habitat and Occurrence
Istigobius nigroocellatus is a demersal species, meaning it is found primarily on the seabed. It typically inhabits shallow coastal waters, with a depth range of 2.0 to 10.0 meters. This goby prefers sandy or muddy substrates, often residing in burrows or under rocks. The Black-spotted Goby, Black-spotted Sand-goby is commonly found in the Indo-Pacific region, particularly in the tropical and subtropical waters of the Indian Ocean and the western Pacific Ocean. It is often observed in marine zones characterized by coral reefs, seagrass meadows, and mangrove forests.
Taxonomy
The species Istigobius nigroocellatus belongs to the Class: Teleostei, Order: Gobiiformes, and Family: Gobiidae. The family Gobiidae encompasses a wide diversity of goby species, renowned for their small size, often exhibiting a close symbiotic relationship with other marine creatures. This goby, like many of its relatives, exhibits a fascinating array of adaptations, contributing to its success in its specialized ecological niches.
Feeding
Istigobius nigroocellatus is a carnivorous species, with a diet primarily consisting of small invertebrates. Its feeding habits include consuming amphipods, copepods, worms, and zoobenthos. It actively forages for prey in the sediment and surrounding environment, making use of its keen senses to locate and capture food items. The Black-spotted Goby, Black-spotted Sand-goby also occasionally includes zooplankton in its diet, supplementing its nutritional needs with these microscopic organisms.
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