Lampriformes
Lampriformes is an order of ray-finned fishes, belonging to the infraclass Teleostei. These fish are characterized by their elongated, laterally compressed bodies and large, prominent eyes. They are found in temperate and tropical waters worldwide, primarily in deep-sea environments. Lampriformes includes a diverse array of species, known collectively as “oarfishes” and “ribbonfishes,” due to their ribbon-like body shape.
Common Names
Members of Lampriformes are commonly referred to as "oarfishes" or "ribbonfishes." This is due to their elongated, ribbon-like bodies, which can grow to impressive lengths.
Characteristics
Lampriformes fishes possess a number of distinctive characteristics that set them apart from other fish orders. These include:
- Elongated, laterally compressed bodies: This gives them a ribbon-like or oar-like appearance.
- Large, prominent eyes: These are adapted for vision in low-light conditions, characteristic of their deep-sea habitats.
- Small, protrusible mouths: This adaptation allows them to capture small prey, such as plankton, crustaceans, and small fish.
- Lack of pelvic fins: Most Lampriformes species lack pelvic fins, which is a unique trait among teleosts.
- Specialized scales: These are often thin and loosely attached, giving them a somewhat translucent appearance.
Environments
Lampriformes fishes are primarily found in temperate and tropical waters worldwide. Most species inhabit deep-sea environments, typically at depths between 200 and 1000 meters. Some species, however, may be found in shallower waters, especially during their larval stages.