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Lepidotrichia is the dermal bone structures of the fin rays in fish fins. Fins are the most distinctive features of a fish, composed of bony spines protruding from the body with skin covering them and joining them together.

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What class do Flounder belong to?

Flounders belong to the Actinoterygii classThe Actinopterygii (the plural form of Actinopterygius) constitute the class of the ray-finned fishes.The ray-finned fishes are so called because they possess lepidotrichia or "fin rays", their fins being webs of skin supported by bony or horny spines ("rays"), as opposed to the fleshy, lobed fins that characterize the class Sarcopterygii which also, however, possess lepidotrichia.


What is the difference between ray-finned fish and a hagfish?

The Actinopterygii, or ray-finned fishes, constitute a class or subclass of the bony fishes. The ray-finned fishes are so called because they possess lepidotrichia or "fin rays", their fins being webs of skin supported by bony or horny spines "rays", as opposed to the fleshy, lobed fins that characterize the class Sarcopterygii which also, however, possess lepidotrichia. These actinopterygian fin rays attach directly to the proximal or basal skeletal elements, the radials, which represent the link or connection between these fins and the internal skeleton.


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What are structures made of bone contained in the fins of perch minnows and eels?

The structures made of bone in the fins of perch, minnows, and eels are known as fin rays or lepidotrichia. These bony elements provide support and structure to the fins, allowing for greater maneuverability and stability in the water. In different species, the arrangement and number of fin rays can vary, reflecting their adaptations to specific aquatic environments.


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