Texas State Fish
Guadalupe Bass (common name)
Micropterus treculii (scientific name)
Found only in Texas, the Guadalupe bass is actually not a true bass but a member of the perch family (like other "black bass" including the largemouth, smallmouth, and spotted bass). Guadalupe bass are smallish river fish, greenish brown in color with white bellies. They have horizontal marks on their faces and irregular diamond-shaped vertical markings along the flanks. The Guadalupe bass was declared a vulnerable species in 1988 and was adopted as the state fish of Texas in 1989. It is threatened by decreasing water levels and hybridization with smallmouth bass. To counteract the effects of hybridization (originally caused by the introduction of smallmouths by a state agency in 1974), native Guadalupe bass are being bred and reintroduced to certain streams.
Length: Up to 18 in (46 cm); average of 10 in (25 cm)
Weight: Up to 3.5 lbs (1.7 kg); average of 12 oz (336 g)
Up to 7 years
Spring-fed, fast-flowing streams
Range: Headwaters of the San Antonio River, the Guadalupe River (above Gonzales), the Lower Colorado River (north of Austin), and portions of the Brazos River in Texas. Introduced to the upper Nueces River system and the Sabinal River.
Water type: Freshwater
Water temp: 60-65°F (16-18°C)
Conservation Status: Vulnerable
Fish, larvae, bees, wasps, and crayfish.
Spawning frequency: March-June
Mating behavior: Distinct pairing
Egg laying: The male builds a gravel nest in flowing water to attract a female, who will lay up to 9,000 eggs. The male then stands guard over the eggs until they are hatched.
Black bass, Guadalupe spotted bass
Click to enlarge an image
Raw Data Source: U.S. Fish and Wildlife Service
Author: World Trade Press