Information:  - A fish is any member of a group of organisms that consist of all gill-bearing aquatic craniate animals that lack limbs with digits. They form a sister group to the tunicates, together forming the olfactores. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish as well as various extinct related groups. Tetrapods emerged within lobe-finned fishes, so cladistically they are fish as well. However, traditionally fish are rendered obsolete or paraphyletic by excluding the tetrapods (i.e., the amphibians, reptiles, birds and mammals which all descended from within the same ancestry). Because in this manner the term "fish" is defined negatively as a paraphyletic group, it is not considered a formal taxonomic grouping in systematic biology. The traditional term pisces (also ichthyes) is considered a typological, but not a phylogenetic classification.  - The teleosts or Teleostei (Greek: "teleios", "complete" + "osteon", "bone") are by far the largest infraclass in the class Actinopterygii, the ray-finned fishes, and make up 96 percent of all fish. This diverse group arose in the Triassic period and members are arranged in about 40 orders and 448 families. Over 26,000 species have been described. Teleosts range from giant oarfish, measuring or more, and ocean sunfish weighing over , to the minute male anglerfish "Photocorynus spiniceps", just long. As well as torpedo-shaped fish built for speed, teleosts can be flattened vertically or horizontally, be elongated cylinders or take specialised shapes as in anglerfish and seahorses. Teleosts dominate the seas from pole to pole and inhabit the ocean depths, estuaries, rivers, lakes and even swamps.  - The ocean sunfish or common mola ("Mola mola") is the heaviest known bony fish in the world. It has an average adult weight between . The species is native to tropical and temperate waters around the globe. It resembles a fish head with a tail, and its main body is flattened laterally. Sunfish can be as tall as they are long when their dorsal and ventral fins are extended.  - In biology, an organism is any contiguous living system, such as an animal, plant, fungus, archaeon, or bacterium. All known types of organisms are capable of some degree of response to stimuli, reproduction, growth and development and homeostasis. An organism consists of one or more cells; when it has one cell it is known as a unicellular organism; and when it has more than one it is known as a multicellular organism. Most unicellular organisms are of microscopic scale and are thus loosely described as microorganisms. Humans are multicellular organisms composed of many trillions of cells grouped into specialized tissues and organs.  - Photocorynus spiniceps is a species of anglerfish in the family Linophrynidae. It is in the monotypic genus "Photocorynus".  - A clade (from , "klados", "branch") is a group of organisms that consists of a common ancestor and all its lineal descendants, and represents a single "branch" on the "tree of life".  - The modern torpedo is a self-propelled weapon with an explosive warhead, launched above or below the water surface, propelled underwater towards a target, and designed to detonate either on contact with its target or in proximity to it.  - Anglerfishes are fish of the teleost order Lophiiformes . They are bony fish named for their characteristic mode of predation, in which a fleshy growth from the fish's head (the esca or illicium) acts as a lure.  - Actinopterygii , or the ray-finned fishes, constitute a class or subclass of the bony fishes.  - Ants are eusocial insects of the family Formicidae and, along with the related wasps and bees, belong to the order Hymenoptera. Ants evolved from wasp-like ancestors in the Cretaceous period, about 99 million years ago and diversified after the rise of flowering plants. More than 12,500 of an estimated total of 22,000 species have been classified. They are easily identified by their elbowed antennae and the distinctive node-like structure that forms their slender waists.  - This article is about a group of ray - finned fish called Acanthomorpha or acanthomorphs . `` '' Acanthomorph '' `` is also a descriptive name for a spiny - walled subgroup of the microscopic fossils called acritarchs . Acanthomorpha ( meaning `` thorn - shaped '' in Greek ) is a huge taxon of teleost fishes with spiny - rays . The clade contains about one third of the world 's modern species of vertebrates : over 14,000 species . A key anatomical innovation in acanthomorphs is hollow and unsegmented spines at the anterior edge of the dorsal and anal fins . A fish can extend these sharp bony spines to protect itself from predators , but can also retract them to decrease drag when swimming . Another shared feature is a particular rostral cartilage , associated with ligaments attached to the rostrum and premaxilla , that enables the fish to protrude its jaws considerably to catch food . Rosen coined the name in 1973 to describe a clade comprising Acanthopterygii , Paracanthopterygii , and also ctenothrissiform fossils from the Cretaceous Period , such as `` '' Aulolepis '' `` and `` '' Ctenothrissa '' `` . Those fossils share several details of the skeleton , and especially of the skull , with modern acanthomorphs . Originally based on anatomy , Acanthomorpha has been borne out by more recent molecular analyses .  - The giant oarfish ("Regalecus glesne") is a species of oarfish of the family Regalecidae. It is an oceanodromous species with a worldwide distribution, excluding polar regions. Other common names include Pacific oarfish, king of herrings, ribbonfish, and streamer fish.  - Seahorse is the name given to 54 species of small marine fishes in the genus Hippocampus. "Hippocampus" comes from the Ancient Greek word "hippos" meaning "horse" and "kampos" meaning "sea monster". The word "seahorse" can also be written as two separate words (sea horse), or hyphenated (sea-horse). Having a head and neck suggestive of a horse, seahorses also feature segmented bony armour, an upright posture and a curled prehensile tail.  - The Triassic is a geologic period and system which spans 50.9 million years from the end of the Permian Period million years ago (Mya), to the beginning of the Jurassic Period Mya. The Triassic is the first period of the Mesozoic Era. Both the start and end of the period are marked by major extinction events. The Triassic was named in 1834 by Friedrich von Alberti, after the three distinct rock layers ("tri" meaning "three") that are found throughout Germany and northwestern Europered beds, capped by marine limestone, followed by a series of terrestrial mud- and sandstonescalled the "Trias".    After reading the paragraphs above, we are interested in knowing the entity with which 'acanthomorpha' exhibits the relationship of 'parent taxon'. Find the answer from the choices below.  Choices: - actinopterygii  - animal  - hagfish  - hippocampus  - illicium  - insects  - lophiiformes  - mola  - mya  - oarfish  - olfactores  - photocorynus  - ribbonfish  - teleostei  - torpedo
The answer to this question is:
teleostei