Luxilus cornutus - BIO203
Some Fishy Facts
Actinopterygii is the largest and most successful group of fishes and even makes up half of all living vertebrates!
Luxilus cornutus have no teeth in their mouth. Instead they posses pharyngeal teeth in the throat that grind against a chewing pad on the base of the skull.
Most fish, including L. cornutus are very poorly equipped with proprioceptors. "75% of nerve fibers supplying cat limb muscles are sensory fibers from the muscle spindles and Golgi tendon organs, monitoring the length and tension in muscles..." (Bone and Moore, 289). These organs are absent in most fishes!
The common shiner can produce underwater sounds for communication in many ways. Some of these ways include the rasping of its fins or by burping, farting, or gulping air.
The swim bladder of the common shiner will account for roughly 7% of its total volume.
The first known Luxilus cornutus in the United States was imported from China.
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