spine-rayed
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perciform — ▪ fish order Introduction any member of the order Perciformes, a group of bony fishes with more than 6,000 species placed in about 150 families. The order is the largest group of fishes in the world today. Perciform fishes occur in… … Universalium
fish — fishless, adj. /fish/, n., pl. (esp. collectively) fish, (esp. referring to two or more kinds or species) fishes, v. n. 1. any of various cold blooded, aquatic vertebrates, having gills, commonly fins, and typically an elongated body covered with … Universalium
Fish — /fish/, n. Hamilton, 1808 93, U.S. statesman: secretary of state 1869 77. * * * I Any of more than 24,000 species of cold blooded vertebrates found worldwide in fresh and salt water. Living species range from the primitive lampreys and hagfishes… … Universalium
atheriniform — ▪ fish Introduction any member of the order Atheriniformes, containing 15 families of marine and freshwater spiny finned fishes (spiny finned fish), including the flying fishes (flying fish) (see ), needlefishes (needlefish), silversides,… … Universalium
ostariophysan — ▪ fish Introduction any of about8,000 species of bony fishes (bony fish) belonging to a group that includes the majority of freshwater fishes throughout the world. Familiar representatives of this group are the minnows (minnow), suckers (sucker) … Universalium
sea star — n. starfish. [1560 70] * * * ▪ echinoderm also called starfish any marine invertebrate of the class Asteroidea (phylum Echinodermata) having rays, or arms, surrounding an indistinct central disk. Despite their older common name, they are not… … Universalium
starfish — /stahr fish /, n., pl. (esp. collectively) starfish, (esp. referring to two or more kinds or species) starfishes. any echinoderm of the class Asteroidea, having the body radially arranged, usually in the form of a star, with five or more rays or… … Universalium
Projectional radiography — or plain film radiography is the practise of producing 2D X ray images. Typically most body parts being x rayed, have two projections taken, usually at right angles to each other. This is for two reasons. First that many fractures are only… … Wikipedia
gasterosteiform — ▪ fish order Introduction any member of the order Gasterosteiformes, a group of fishes characterized generally by soft fin rays, pelvic fins located on the abdomen, an air bladder without a duct to the gut, and a primitive kidney. Gill… … Universalium
stickleback — /stik euhl bak /, n. any of the small, pugnacious, spiny backed fishes of the family Gasterosteidae, inhabiting northern fresh waters and sea inlets, the male of which builds and guards the nest. Also called prickleback. [1400 50; late ME… … Universalium
