What specific type of scales, featuring tiny, tooth-like projections, are characteristic of *P. annularis* morphology?
Answer
Ctenoid scales
The physical classification markers for *Pomoxis annularis* include its scale type, which falls within the broad teleost group definition. The White Crappie possesses ctenoid scales. These scales are structurally distinct because the exposed edge features numerous tiny projections resembling teeth, which gives them a rougher texture compared to smooth cycloid scales. This feature, combined with other morphological traits like a deep-bodied, laterally compressed shape and a terminal mouth position suited for direct prey capture, contributes to the overall physical description used in identifying the species.

Related Questions
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