The Fish and Boat Commission is monitoring invasive rusty crayfish that act like gladiators as they try to take over native ...

Bass will eat crayfish year-round ... smallmouth in one of the Great Lakes will gorge on goby, simply because one fish can thrive in one environment, while the other is more suited for the ...

Crayfish keep streams cleaner by eating decaying plants and animals. They are eaten, in turn, by fish, birds, reptiles, amphibians and mammals, making them an important link in the food web. Big Sandy ...

Smith says one problem is that crayfish eat salmon carcasses after they've spawned. That removes nutrients that the fish bring back from the ocean, which normally flow through the water system and ...

The sighting was of a female crayfish walking with her young at Lake Balboa in Los Angeles, according to the U.S. Fish and Wildlife Service. More: 6 animals that mate for life: See the enduring ...

They even eat little fish, little minnows and things like that and baby sport fish. So that’s a big impact." They have become the predominant crayfish in the Susquehanna River and they also ...