The Whitespotted Pygmy Filefish, scientifically known as Rudarius ercodes, is a small, distinctive fish belonging to the filefish family (Monacanthidae). This species is characterized by its unique appearance and limited size, making it a fascinating subject for marine enthusiasts.
Description & Characteristics
The Rudarius ercodes is a small fish, reaching a maximum size of 7.5 cm. Its body is compressed and elongated, with a slightly pointed snout and a dorsal fin that extends almost the entire length of its back. The Whitespotted Pygmy Filefish is easily recognizable by its distinctive coloration. It has a pale brown or greyish-brown body covered in numerous white spots. These spots are typically scattered across the body, creating a striking contrast against the darker background.
Habitat and Occurrence
The Rudarius ercodes is a common inhabitant of shallow, coastal waters, particularly those with rocky reefs and seagrass beds. It is commonly found in the Indo-Pacific region, with its range extending from the Red Sea and the east coast of Africa to Japan and Australia. This species is typically found in the intertidal zone and down to depths of about 50 meters, demonstrating its adaptability to a range of marine environments.
Taxonomy
The Rudarius ercodes is classified within the Order Tetraodontiformes, which includes pufferfish, triggerfish, and filefish. This order is characterized by the presence of a unique tooth structure, typically fused into a beak-like formation. The Rudarius ercodes belongs to the Family Monacanthidae, known as the filefish, a group of fish with a single, prominent dorsal spine that can be locked in an upright position.
Feeding
The Rudarius ercodes is a primarily omnivorous feeder, meaning that it consumes both plant and animal matter. Its diet consists mainly of benthic invertebrates, such as amphipods, copepods, isopods, and worms. They also feed on detritus, krill, and mysids, demonstrating their adaptability to various food sources available in their environment.
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