This lifeform is found in Argentina and Chile. This lifeform is found in freshwater such as lakes or rivers.

Cynolebias nigripinnis is found in the Parana River in Argentina. The dark color, white spots, and deep body help identify this small fish that does not exceed two inches in length.

Toothcarp, Family Cyprinodontidae, is a family of small
egg-laying fish that are found worldwide. One unusual characteristic of this family is that many of the species produce eggs that can survive a lack of water during the dry season. When the rainy season begins and puddles and pools begin to appear, they are suddenly filled with beautiful fish.

Atheriniformes group of fish consists of diverse marine and freshwater kinds. It includes many of the tropical aquarium fish (guppies, mollies, and platies), flying fish, and the needle fish of the ocean.

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.