Minnesota Aquatic Invasive Species Research Center (MAISRC)
New paper on Asian carp shoaling behavior from MAISRC
MAISRC researchers Dr. Ratna Ghosal, Peter Xiong, and Dr. Peter Sorensen recently published a new paper, Invasive Bighead and Silver Carps Form Different Sized Shoals that Readily Intermix. The paper discusses how Asian carp form tight groups (shoals), a strategy that helps individuals find food and avoid predation. This may explain why they are hard to find and catch in low densities. The tendency to shoal brings hope to using tools such as Judas fish to locate the invasive carp. Ghosal and Sorensen found that juvenile bighead and silver carps shoal together, which suggests that the silver carp may benefit from living among larger groups of bighead carp. This may also explain the hybridization between these two species that has been seen in the Mississippi River.