Species profile
Guadalupe Bass
Micropterus treculii
At a glance
Guadalupe Bass (Micropterus treculii) is an IUCN Near Threatened bony-fish species with specific harvest rules tracked in 1 of 66 jurisdictions covered by CatchRules.
Confirmed by 1,051 research-grade iNaturalist observations, concentrated in Texas.
Notable details
- The official state fish of Texas, found nowhere else in the world.
- Lives only in Texas Hill Country rivers, including the Guadalupe and Colorado rivers.
- Rarely exceeds 12 inches or 1 pound, making it the smallest black bass species.
- Threatened by hybridization with introduced smallmouth bass, which dilutes its gene pool.
- Prefers fast, clear water flowing over rocky and gravelly substrate.
Where Guadalupe Bass are seen
Jurisdictions with rules for Guadalupe Bass
Background
The Guadalupe Bass (Micropterus treculii) is a rare species of fish endemic to the U.S. state of Texas, where it also is the official state fish. It is restricted to creeks and rivers (including the Guadalupe River, hence the name Guadalupe Bass), and is listed as Near Threatened. Today, most fly fishermen and anglers practice catch-and-release techniques to improve fish populations. The…
Background excerpt adapted from Wikipedia's Guadalupe Bass article (CC BY-SA). Visit Wikipedia for the full entry.
Other bony fish on CatchRules
Photo credit: iNaturalist / Wikipedia. Identification reference only — verify regulations with the issuing wildlife agency before retaining a catch.