Within which biological family, known as the sunfish family, does Micropterus treculii reside?
Centrarchidae
The Guadalupe bass, despite sometimes being colloquially grouped with other 'black bass' species, is scientifically classified within the family Centrarchidae, which is widely recognized as the sunfish family. This placement is significant because it highlights the evolutionary relationships showing that, biologically speaking, the Guadalupe bass is actually a sunfish rather than a true bass, distinguishing it from some of its closer relatives in common terminology. Higher up in the classification hierarchy, it belongs to the Phylum Chordata and the Class Actinopterygii (ray-finned fishes), and the Order Centrarchiformes, but Centrarchidae defines its core family relationship.

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Guadalupe Bass (Micropterus Treculii) - The State Fish of Texas