The Whiteblotched Koester, Scalyjaw Koester, scientifically known as Acanthistius joanae, is a fish species found in the depths of the ocean. This relatively small fish, reaching a maximum size of 14.0 cm, is a fascinating example of marine biodiversity.
Description & Characteristics
Acanthistius joanae possesses a distinct appearance. Its name, “Whiteblotched Koester,” hints at its key characteristics. The fish is characterized by white blotches scattered across its body, a feature that helps it blend in with the surrounding environment. The “Scalyjaw Koester” part of its name refers to its distinctive jaw structure, covered in scales. This unique feature, along with its overall body shape and coloration, contribute to its identification.
Habitat and Occurrence
The Whiteblotched Koester, Scalyjaw Koester, Acanthistius joanae, is primarily found in the marine environment, inhabiting a depth range of 23.0 to 140.0 meters. This means it resides in the mesopelagic zone, also known as the “twilight zone,” where light levels are significantly reduced. This specific depth range makes it a characteristic inhabitant of this marine zone.
Taxonomy
Acanthistius joanae is classified within the animal kingdom, belonging to the Class: Teleostei, Order: Perciformes, and Family: Serranidae. This family, known for its diverse and widespread fish species, includes a wide range of marine predators. Acanthistius joanae, therefore, shares a lineage with a diverse group of fish species, showcasing the evolutionary relationships within the marine world.
Feeding
Acanthistius joanae is an invertebrate feeder, meaning it relies on smaller creatures for its sustenance. Its diet likely consists of various invertebrates that inhabit its depth range, playing an important role in the mesopelagic food web.
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