Variable jawfish – Opistognathus variabilis

Variable jawfish, Variable Jawfish, Opistognathus variabilis
Size: 9.6 cm
Depth: 0 - 37 m
Water Type: Marine
Toxicity: Toxic hazard unknown
Red List Status: Least concern (LC)
Temperature: °F - 82.4 °F (°C - 28°C)

The Variable Jawfish, scientifically known as Opistognathus variabilis, is a captivating species of fish belonging to the Opistognathidae family, commonly referred to as jawfishes. This intriguing creature exhibits a unique combination of characteristics and behaviors, making it an intriguing subject for marine biologists and enthusiasts alike.

Description & Characteristics

Opistognathus variabilis is a relatively small fish, reaching a maximum size of 9.6 cm. The Variable Jawfish showcases a fascinating range of color patterns and markings. It boasts a slender body with a distinctive elongated snout, giving it an almost “jaw-like” appearance. The color variations observed in this species contribute to its common name, as individuals can display a spectrum of colors ranging from browns and yellows to reds and oranges. These vibrant hues serve as camouflage, blending the fish seamlessly into its surroundings.

Habitat and Occurrence

Opistognathus variabilis prefers to inhabit shallow coastal waters, with a depth range spanning from the surface down to 37 meters. This wide range allows it to thrive in a variety of marine ecosystems, from coral reefs to rocky shores. The Variable Jawfish demonstrates a fondness for sheltered crevices and burrows, where it finds refuge and protection from predators. This burrowing behavior is characteristic of many jawfish species and plays a crucial role in their survival.

Taxonomy

Opistognathus variabilis is classified within the Class: Teleostei, an extensive group of ray-finned fishes. This class is further divided into the Order: Ovalentaria incertae sedis, highlighting the unique evolutionary path of jawfishes. The family: Opistognathidae encompasses a diverse range of jawfish species, characterized by their distinctive jaw structure and burrowing habits.

Feeding

The Variable Jawfish exhibits a diverse feeding strategy, relying on a combination of invertebrates and zooplankton as its primary food sources. These small organisms are essential for its nutritional needs, contributing to its vibrant coloration and overall health. The fish’s elongated snout aids in navigating narrow spaces and crevices, allowing it to access food sources that other fish might miss.

Associated Species

Image References

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