Four invasive species of asian carp

Four species of Asian Carp are making their way up the Mississippi River, and pose a threat to Minnesota rivers and lakes.

Bighead Carp

Hypophthalmichthys nobilis

key characteristics: Silver in color • dark blotches along the back (dorsal) region • no scales on head • no barbels on nose, unlike common carp • downward slanting mouth (frown) • low set eyes • keel that extends partway along belly

Black Carp

Mylopharyngodon piceus

 

key characteristics: darker color • large scales • no scales on head • pointy shaped face • teeth that look like human molars

Grass Carp

Ctenopharyngodon idella

key characteristics: olive green in color • rounded snout • over-hanging upper lip • no barbels around mouth • “torpedo like” body shape

Silver Carp

Hypophthalmichthys molitrix

key characteristics: silver color • small scales • no scales on head • no barbels on nose, unlike common carp • downward slanting mouth (frown) • low set eyes • keel that extends to throat

 

Sources: http://suite101.com/article/grass-carp-identification-a260692

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