Echinorhynchidae are parasitic worms in the Echinorhynchidae family that live in the intestines of fish, reptiles, and amphibians.
Echinorhynchidae is a family of acanthocephalan parasitic worms from the order Echinorhynchida. Family: Echinorhynchidae
Cobbold, 1879 The adult worms live in the intestines of fishes, amphibians and reptiles. 
