Life comes in all different shapes and sizes, and fish are no exception. Here, young scientists create fish prints as they learn how specific characteristics allow different species to survive in their particular habitats.

What's the difference between behavioral adaptations and physical adaptations? Learn about the various ways that organisms adapt to their environment with a worksheet about the creatures of the Hudson River.

explore fast facts, physiology, habitats, behaviors, and range of the rainbow trout.

Presents an overview of the Discus, including its habitat, appearance, behavior, breeding, diet, conservation status, and much more. Images of this species and statistics can also be found here.

Learn fast facts, the physiology, habitats, behaviors and range of the Atlantic or Pacific salmon.

Learn fast facts, the physiology, habitats, behaviors and range of the tundra swan.

Comprehensive reference material on ray-finned fishes, with information on their habitat, evolution, physical features, eating habits, reproduction, behavior, how they communicate, role in the ecosystem, and threats to their continuing...