Knowra Lampriformes Lampriformes Lampriformes is an order of marine ray-finned fishes that includes opahs, oarfishes, ribbonfishes, and crestfishes. Its members are mostly open-water fishes with distinctive deep, elongated, or ribbonlike bodies.
Actinopterygii : The class of ray-finned fishes, whose fins are supported by slender bony rays. Lampriformes belongs to this vast fish lineage.
Opah : A large, deep-bodied pelagic fish in the family Lampridae, also called moonfish. Opahs are the order’s rounded, powerful-bodied members.
Regional endothermy : The elevation of temperature in selected body regions above the surrounding water. Opahs maintain warmer swimming muscles and organs than the surrounding seawater.
Deep-sea exploration : The use of vehicles, instruments, and sampling methods to investigate the deep ocean. Deep-water surveys document lampriform species that are rarely seen near the surface.
Teleostei : The major group of bony fishes with mobile jaws and a largely ossified skeleton. Most modern classifications place Lampriformes within this diverse radiation.
Oarfish : A very long, ribbon-shaped marine fish in the family Regalecidae. Oarfishes are among the most elongated and rarely observed lampriforms.
Countercurrent heat exchange : Heat transfer between fluids flowing in opposite directions, conserving warmth in an animal’s body. Opah blood vessels reduce heat loss from warm tissues to the gills.
Marine animal stranding : The arrival of a living or dead marine animal on shore outside its usual habitat. Stranded oarfishes and ribbonfishes often provide rare opportunities for study.
Lampriform anatomy : The characteristic body, fin, and skeletal features found across lampriform fishes. Shared anatomical traits help distinguish members despite their varied silhouettes.
Ribbonfish : An elongated, laterally compressed marine fish, commonly belonging to the family Trachipteridae. Ribbonfishes show the order’s characteristic flat, tapering body plan.
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