Which fish species is considered least susceptible to piscicides?

The Black Bullhead is recognized as the fish species least susceptible to piscicides due to its behavioral and physiological characteristics. This species often inhabits environments with abundant cover and can find refuge in muddy substrates, which allows them to evade direct exposure to chemicals used in piscicide treatments. The hardiness and adaptability of the Black Bullhead also contribute to its resilience against chemical agents.

In contrast, other species like Bluegill, Channel Catfish, and Yellow Perch are generally more vulnerable to piscicides, as they exhibit different behaviors and habitat preferences that may expose them more significantly to chemical treatments. Understanding these differences is essential for effective aquatic pest management, as it helps in selecting appropriate methods for controlling fish populations without causing undue harm to more resilient species like the Black Bullhead.