Razorback Sucker

Razorback Sucker

The Razorback Sucker is distinguished by its prominent, sharp-edged keel, or "humpback," which extends along its back. This unique feature, combined with its distinctive coloration, makes it easily recognizable.
SCIENTIFIC NAME
Xyrauchen texanus
CLASSIFICATION
Fish
LIFE SPAN
10-40 Years
SIZE
18-36” | 5-15lbs
STATE CONSERVATION STATUS
  • Endangered
  • Priority Species
  • State Protected
FEDERAL CONSERVATION STATUS
Endangered
GAME STATUS
Non-Game
GAME TYPE
None
  1. Washoe
  2. Humboldt
  3. Pershing
  4. Churchill
  5. Mineral
  6. Lyon
  7. Douglas
  8. Carson City
  9. Storey
  1. Elko
  2. Lander
  3. Eureka
  4. White Pine
  1. Esmeralda
  2. Nye
  3. Lincoln
  4. Clark

Habitat & Range

Lake Mead and Lake Mohave are key habitats for these large fish. They can also be found in the lower Colorado River.

  • Lakes and reservoirs
  • Rivers and streams

Threats

  • Dams
  • Invasive Species
  • Predation

Adult Razorback Suckers migrate to riverbeds and cobble bars to spawn, typically in the spring or late winter. They lay their eggs on these substrates, where the fertilization process occurs. Each female releases approximately 10 to 12 eggs per spawning event. The eggs have a gestation period of about three to four weeks, with hatching success largely dependent on water temperature. Eggs exposed to temperatures below 50°F (10°C) are unlikely to survive.

Razorback Suckers primarily feed on algae, macroinvertebrates (such as insects and crustaceans), microinvertebrates, and plankton. They also consume larvae and decomposing plant material found on the river or lake beds. This varied diet helps them thrive in their aquatic environments.

Fun Facts

Razorback Suckers are considered a “living fossil,” with a lineage that dates back millions of years. Their evolutionary history provides valuable insights into the ancient ecosystems of North America.
NDOW biologist holds up a razorback sucker fish