A small fish that packs a punch

The Western mosquitofish (Gambusia affinis) is a fish in the order Cyprinodontiformes that is non-native to California.  This little fish is native to the central United States, Read More…

Moved in, taking over?

Each time we work on waterways in California’s Central Valley, we repeatedly come across a sobering fact: non-native fishes overwhelmingly dominate the fisheries we monitor. In a Read More…

Don’t dump that fish

All the world's a fishbowl for an aquarium fish set free. As anyone whose pet fish has defied the odds can attest, aquarium fish are bred to Read More…

Awkward introduction

Here’s case of an unintentional, slightly embarrassing, fish introduction in California. The bigscale logperch (Percina macrolepida) is darter native to the Gulf Coast river systems. In 1953, Read More…

Sucking and sorting

The common carp (Cyprinus carpio) was one of the first freshwater species to be introduced to California, brought in from Germany to a private pond in 1872. Read More…

Who’s who…

Bluegill and redear sunfish are common fish belonging to the centrachid family, a group of similar fish that includes crappie, largemouth bass, and smallmouth bass, among others. Read More…