Xiphasia
Xiphasia is a genus of marine ray-finned fishes belonging to the family Blenniidae, commonly known as blennies. These fishes are found primarily in the western Pacific Ocean, particularly around Japan, Taiwan, and the Philippines. They are characterized by their elongated bodies, with a compressed and somewhat flattened profile. Their coloration can vary depending on the species, but generally features a combination of brown, black, and white markings.
Common Names
The members of the genus Xiphasia are commonly referred to as "knife blennies" or "sword blennies," due to their long, slender bodies that resemble blades.
Characteristics
Xiphasia species are distinguished by several key characteristics:
- Elongated body shape: The body is long and slender, resembling a knife or sword.
- Compressed body: The body is flattened laterally.
- Large head: The head is relatively large compared to the body.
- Small eyes: The eyes are small and located on the sides of the head.
- Single dorsal fin: The dorsal fin extends the entire length of the back.
- Anal fin: The anal fin is located behind the dorsal fin, and it is also long and continuous.
- Caudal fin: The caudal fin is rounded or slightly forked.
Environments
Xiphasia species are typically found in shallow, coastal waters, often living amongst rocks, coral reefs, or seagrass beds. They prefer habitats with strong currents, where they can easily find food. Their camouflage helps them blend in with their surroundings, making them difficult to spot for predators.
References
For more detailed information and scientific references about the genus Xiphasia, please consult the following resources: