Bottlelight fish (Danaphos oculatus) is found widely in the Pacific and Indian Oceans. This can be found at depths from about 600 to 3,000 feet below the surface. This is a large headed, large eyed species with a long even anal fin. The maximum length is less than about 2.5 inches.

Hatchetfish are an unusual deep sea group of fish. These are small flattened fish usually less than 4 inches in length. These fish have large marble like extruding eyes and proportionally large mouths. These fish lack scales. There were about 40 known species as of l983.

Salmon Group, Order Salmoniformes, is found worldwide in oceans. To simplify study of this group we have separated the deep sea species into a second artificial order. This order includes a number of families with small sizes and bizarre shapes. (Some authors have moved these families to the order Stomiiformes.)

We have found two readily available sources that include information on deep sea fish that are in many libraries: Peterson Field Guide to Pacific Coast Fishes and the Encyclopedia of Fishes edited by Paxton.

We feel the purposes of hierarchical taxonomy are several fold. One purpose is for scientists to help discover physical and genetic relationships between species. A second, and probably more important purpose, is to help field biologists who monitor the environment and frequently work in many different groups of lifeforms to easily identify something. A third purpose is to help those who want to know about the different species on planet earth for a variety of reasons.

Bony fish, Class Teleostomi, are a class of chordates that include the majority of fish-like animals found on earth. They are characterized by a bony jaw and a bony skeleton. They are found in both fresh and marine waters.

Backboned Animals (Phylum Chordata) are the most advanced group of animals on earth. These animals are characterized by having a spinal cord or backbone. Most members have a clearly defined brain that controls the organism through a spinal cord. Fish, amphibians, reptiles, birds, and mammals are in this phylum.

Currently, some taxonomists believe that the fish should be divided into two groups (sharks and regular fishes) and that there are some other primitive groups in the phylum such as hagfish or lampreys.

Animal Kingdom contains numerous organisms that feed on other animals or plants. Included in the animal kingdom are the lower marine invertebrates such as sponges and corals, the jointed legged animals such as insects and spiders, and the backboned animals such as fish, amphibians, reptiles, birds, and mammals.

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