Troglobites found only in base level streams include the endangered Kentucky Cave Shrimp (
Palaemonias ganteri). The more adaptable cave crayfish
Orconectes pellucidus occupies habitats ranging from base level to tiny streams, and can travel out of water if necessary. The troglophilic or partially cave adapted amphipod
Crangonyx packardi, the crayfish
Cambarus tenebrosus, the sculpin
Cottus carolinae, and the springfish
Chologaster agassizi often occur in organically rich situations. With the exception of sculpin, fish and crayfish are predators and the remaining species are primarily grazers.
