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How does the number of protacanthopterygian vertebrae compare with that of many other fishes?
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protacanthopterygian
Rainbow trout (Oncorhynchus mykiss).
In the context of protacanthopterygian fishes, the number of vertebrae is typically more than 24. This count is generally higher than that found in many other fishes, as the superorder Protacanthopterygii is considered to be among the most primitive of the modern teleosts.12