Wikipedia:Today's featured article/August 2, 2017
The teleosts (from Greek for "complete bone") are an infraclass of ray-finned fishes that arose in the Triassic period. Making up 96 percent of all known fish species, this diverse group includes about 40 orders and 448 families. They inhabit oceans at all depths, estuaries, rivers, lakes and swamps. They range in size from the giant oarfish, measuring 25 feet (7.6 m) or more, and the ocean sunfish, weighing over 2.2 short tons (2 tonnes), to the male anglerfish Photocorynus spiniceps, just 0.24 inches (6.2 mm) long. Teleosts can be torpedo-shaped, flattened (vertically or horizontally) or cylindrical, and some, like the anglerfish and seahorse, have unique shapes. They can protrude their jaws, enabling them to grab prey and draw it into their mouth. Depicted in art over the centuries, teleosts are economically important to humans. They are harvested for food, captured for sport, kept in aquariums, and used in research, especially in the fields of genetics and developmental biology. (Full article...)