| alligatorfish | (noun) small very elongate sea poachers | Synonyms: Aspidophoroides monopterygius |
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| amberfish | (noun) any of several amber to coppery fork-tailed warm-water carangid fishes | Synonyms: amberjack |
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| angelfish | (noun) sharks with broad flat bodies and winglike pectoral fins but that swim the way sharks do | Synonyms: angel shark, monkfish, Squatina squatina |
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| (noun) a butterfly fish of the genus Pomacanthus | - |
| (noun) deep-bodied disk-shaped food fish of warmer western Atlantic coastal waters | Synonyms: Chaetodipterus faber, spadefish |
| anglerfish | (noun) fishes having large mouths with a wormlike filament attached for luring prey | Synonyms: allmouth, angler, angler fish, goosefish, Lophius Americanus, lotte, monkfish |
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| archerfish | (noun) any of several small freshwater fishes that catch insects by squirting water at them and knocking them into the water; found in Indonesia and Australia | Synonyms: Toxotes jaculatrix |
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| balloonfish | (noun) similar to but smaller than porcupinefish | Synonyms: Diodon holocanthus |
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| barrelfish | (noun) blackish fish of New England waters | Synonyms: black rudderfish, Hyperglyphe perciformis |
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| batfish | (noun) bottom-dweller of warm western Atlantic coastal waters having a flattened scaleless body that crawls about on fleshy pectoral and pelvic fins | - |
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| billfish | (noun) giant warm-water game fish having a prolonged and rounded toothless upper jaw | - |
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| (noun) elongate European surface-dwelling predacious fishes with long toothed jaws; abundant in coastal waters | Synonyms: gar, needlefish |
| (noun) primitive predaceous North American fish covered with hard scales and having long jaws with needlelike teeth | Synonyms: gar, garfish, garpike, Lepisosteus osseus |
| (noun) slender long-beaked fish of temperate Atlantic waters | Synonyms: saury, Scomberesox saurus |
| blackfish | (noun) female salmon that has recently spawned | - |
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| (noun) small dark-colored whale of the Atlantic coast of the United States; the largest male acts as pilot or leader for the school | Synonyms: black whale, common blackfish, Globicephala melaena, pilot whale |
| (noun) large dark-colored food fish of the Atlantic coast of North America | Synonyms: tautog, Tautoga onitis |
| blowfish | (noun) any of numerous marine fishes whose elongated spiny body can inflate itself with water or air to form a globe; several species contain a potent nerve poison; closely related to spiny puffers | Synonyms: globefish, puffer, pufferfish |
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| (noun) delicacy that is highly dangerous because of a potent nerve poison in ovaries and liver | Synonyms: puffer, pufferfish, sea squab |
| bluefish | (noun) bluish warm-water marine food and game fish that follow schools of small fishes into shallow waters | Synonyms: Pomatomus saltatrix |
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| (noun) fatty bluish flesh of bluefish | - |
| boarfish | (noun) fish with a projecting snout | Synonyms: Capros aper |
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| (noun) fish with large eyes and long snouts | - |
| bonefish | (noun) slender silvery marine fish found in tropical mud flats and mangrove lagoons | Synonyms: Albula vulpes |
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| boxfish | (noun) any of numerous small tropical fishes having body and head encased in bony plates | Synonyms: trunkfish |
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| buffalofish | (noun) any of several large suckers of the Mississippi valley | Synonyms: buffalo fish |
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| (noun) large carp-like North American fish | - |
| burrfish | (noun) any of several fishes having rigid flattened spines | - |
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| butterfish | (noun) small marine fish with a short compressed body and feeble spines | Synonyms: stromateid, stromateid fish |
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| (noun) slippery scaleless food fish of the northern Atlantic coastal waters | Synonyms: Pholis gunnellus, rock gunnel |
| (noun) any of numerous small flat Atlantic food fish having smooth skin | - |
| butterflyfish | (noun) tropical fish with huge fanlike pectoral fins for underwater gliding; unrelated to searobins | Synonyms: flying gurnard, flying robin |
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| cardinalfish | (noun) small red fishes of coral reefs and inshore tropical waters | - |
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| catfish | (noun) any of numerous mostly freshwater bottom-living fishes of Eurasia and North America with barbels like whiskers around the mouth | Synonyms: siluriform fish |
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| (noun) large ferocious northern deep-sea food fishes with strong teeth and no pelvic fins | Synonyms: wolf fish, wolffish |
| (noun) flesh of scaleless food fish of the southern United States; often farmed | Synonyms: mudcat |
| (verb) To deceive someone by professing romantic feelings but actually using a false identity | - |
| chenfish | (noun) small silvery marine food fish found off California | Synonyms: Genyonemus lineatus, kingfish, white croaker |
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| cigarfish | (noun) small fusiform fish of western Atlantic | Synonyms: Decapterus punctatus, quiaquia, round scad |
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| clingfish | (noun) very small (to 3 inches) flattened marine fish with a sucking disc on the abdomen for clinging to rocks etc. | - |
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| codfish | (noun) major food fish of Arctic and cold-temperate waters | Synonyms: cod |
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| (noun) lean white flesh of important North Atlantic food fish; usually baked or poached | Synonyms: cod |
| conchfish | (noun) found in West Indies; lives in mantle cavity of a living conch | Synonyms: Astropogon stellatus |
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| convictfish | (noun) greenling with whitish body marked with black bands | Synonyms: convict fish, Oxylebius pictus, painted greenling |
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| cornetfish | (noun) slender tropical fish with a long tubular snout and bony plates instead of scales | - |
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| cowfish | (noun) trunkfish having hornlike spines over the eyes | Synonyms: Lactophrys quadricornis |
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| crampfish | (noun) any sluggish bottom-dwelling ray of the order Torpediniformes having a rounded body and electric organs on each side of the head capable of emitting strong electric discharges | Synonyms: electric ray, numbfish, torpedo |
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| crawfish | (noun) large edible marine crustacean having a spiny carapace but lacking the large pincers of true lobsters | Synonyms: crayfish, langouste, rock lobster, sea crawfish, spiny lobster |
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| (noun) small freshwater decapod crustacean that resembles a lobster | Synonyms: crawdad, crawdaddy, crayfish |
| (noun) tiny lobster-like crustaceans usually boiled briefly | Synonyms: crawdad, crayfish, ecrevisse |
| (verb) make a retreat from an earlier commitment or activity | Synonyms: back away, back out, crawfish out, pull back, pull in one's horns, retreat, withdraw |
| crayfish | (noun) large edible marine crustacean having a spiny carapace but lacking the large pincers of true lobsters | Synonyms: crawfish, langouste, rock lobster, sea crawfish, spiny lobster |
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| (noun) small freshwater decapod crustacean that resembles a lobster | Synonyms: crawdad, crawdaddy, crawfish |
| (noun) tiny lobster-like crustaceans usually boiled briefly | Synonyms: crawdad, crawfish, ecrevisse |
| (noun) warm-water lobsters without claws; those from Australia and South Africa usually marketed as frozen tails; caught also in Florida and California | Synonyms: langouste, rock lobster, spiny lobster |
| cutlassfish | (noun) long-bodied marine fishes having a long whiplike scaleless body and sharp teeth; closely related to snake mackerel | Synonyms: frost fish, hairtail |
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| cuttlefish | (noun) ten-armed oval-bodied cephalopod with narrow fins as long as the body and a large calcareous internal shell | Synonyms: cuttle |
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| damselfish | (noun) small brilliantly colored tropical marine fishes of coral reefs | Synonyms: demoiselle |
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| dealfish | (noun) deep-sea ribbonfish | Synonyms: Trachipterus arcticus |
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| devilfish | (noun) extremely large pelagic tropical ray that feeds on plankton and small fishes; usually harmless but its size make it dangerous if harpooned | Synonyms: manta, manta ray |
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| (noun) bottom-living cephalopod having a soft oval body with eight long tentacles | Synonyms: octopus |
| (noun) medium-sized greyish-black whale of the northern Pacific | Synonyms: Eschrichtius gibbosus, Eschrichtius robustus, gray whale, grey whale |
| doctorfish | (noun) surgeon fish of the West Indies | Synonyms: Acanthurus chirurgus, doctor-fish |
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| dogfish | (noun) any of several small sharks | - |
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| (noun) primitive long-bodied carnivorous freshwater fish with a very long dorsal fin; found in sluggish waters of North America | Synonyms: Amia calva, bowfin, grindle |
| dollarfish | (noun) small food fish of Atlantic coast | Synonyms: Poronotus triacanthus |
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| (noun) any of several silvery marine fishes with very flat bodies | Synonyms: Atlantic moonfish, horse-head, horsefish, horsehead, moonfish, Selene setapinnis |
| dolphinfish | (noun) large slender food and game fish widely distributed in warm seas (especially around Hawaii) | Synonyms: dolphin, mahimahi |
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| (noun) the lean flesh of a saltwater fish found in warm waters (especially in Hawaii) | Synonyms: mahimahi |
| driftfish | (noun) small (6 inches) tropical butterfishes found worldwide | - |
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| (noun) larger butterfishes of the western Atlantic from the New York area to the northern Gulf of Mexico | - |
| drumfish | (noun) small to medium-sized bottom-dwelling food and game fishes of shallow coastal and fresh waters that make a drumming noise | Synonyms: drum |
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| dwarfish | (adjective) atypically small | - |
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| elfish | (adjective) usually good-naturedly mischievous | Synonyms: elfin, elvish |
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| filefish | (noun) narrow flattened warm-water fishes with leathery skin and a long file-like dorsal spine | - |
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| fish | (noun) any of various mostly cold-blooded aquatic vertebrates usually having scales and breathing through gills | - |
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| (noun) the flesh of fish used as food | - |
| (verb) catch or try to catch fish or shellfish | - |
| (verb) seek indirectly | Synonyms: angle |
| flagfish | (noun) a fish with a dark-blue back and whitish sides with red stripes; found in swamps and streams of Florida | Synonyms: American flagfish, Jordanella floridae |
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| flamefish | (noun) a cardinalfish found in tropical Atlantic coastal waters | Synonyms: Apogon maculatus, flame fish |
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| flatfish | (noun) any of several families of fishes having flattened bodies that swim along the sea floor on one side of the body with both eyes on the upper side | - |
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| (noun) sweet lean whitish flesh of any of numerous thin-bodied fish; usually served as thin fillets | - |
| flyfish | (verb) fish with flies as lures | Synonyms: fly-fish |
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| frogfish | (noun) fish having a frog-like mouth with a lure on the snout | - |
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| garfish | (noun) primitive predaceous North American fish covered with hard scales and having long jaws with needlelike teeth | Synonyms: billfish, gar, garpike, Lepisosteus osseus |
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| ghostfish | (noun) eellike Atlantic bottom fish with large almost vertical mouth | Synonyms: Cryptacanthodes maculatus, wrymouth |
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| globefish | (noun) any of numerous marine fishes whose elongated spiny body can inflate itself with water or air to form a globe; several species contain a potent nerve poison; closely related to spiny puffers | Synonyms: blowfish, puffer, pufferfish |
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| goatfish | (noun) brightly colored tropical fishes with chin barbels | Synonyms: Mullus surmuletus, red mullet, surmullet |
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| goldfish | (noun) small golden or orange-red freshwater fishes of Eurasia used as pond or aquarium fishes | Synonyms: Carassius auratus |
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| goosefish | (noun) fishes having large mouths with a wormlike filament attached for luring prey | Synonyms: allmouth, angler, angler fish, anglerfish, Lophius Americanus, lotte, monkfish |
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| groundfish | (noun) fish that live on the sea bottom (particularly the commercially important gadoid fish like cod and haddock, or flatfish like flounder) | Synonyms: bottom fish |
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| guitarfish | (noun) primitive tropical bottom-dwelling ray with a guitar-shaped body | - |
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| hagfish | (noun) eellike cyclostome having a tongue with horny teeth in a round mouth surrounded by eight tentacles; feeds on dead or trapped fishes by boring into their bodies | Synonyms: hag, slime eels |
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| harvestfish | (noun) butterfish up to a foot long of Atlantic waters from Chesapeake Bay to Argentina | Synonyms: Paprilus alepidotus |
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| headfish | (noun) among the largest bony fish; pelagic fish having an oval compressed body with high dorsal and anal fins and caudal fin reduced to a rudder-like lobe; worldwide in warm waters | Synonyms: mola, ocean sunfish, sunfish |
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| hogfish | (noun) found from Long Island southward | Synonyms: Orthopristis chrysopterus, pigfish |
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| (noun) large wrasse of western Atlantic; head of male resembles a pig's snout | Synonyms: hog snapper, Lachnolaimus maximus |
| horsefish | (noun) any of several silvery marine fishes with very flat bodies | Synonyms: Atlantic moonfish, dollarfish, horse-head, horsehead, moonfish, Selene setapinnis |
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| huffish | (adjective) sullen or moody | Synonyms: sulky |
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| jawfish | (noun) small large-mouthed tropical marine fishes common along sandy bottoms; males brood egg balls in their mouths; popular aquarium fishes | - |
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| jellyfish | (noun) any of numerous usually marine and free-swimming coelenterates that constitute the sexually reproductive forms of hydrozoans and scyphozoans | - |
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| (noun) large siphonophore having a bladderlike float and stinging tentacles | Synonyms: man-of-war, Portuguese man-of-war |
| jewfish | (noun) large dark grouper with a thick head and rough scales | Synonyms: Mycteroperca bonaci |
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| (noun) large important food fish of Australia; almost indistinguishable from the maigre | Synonyms: mulloway, Sciaena antarctica |
| killifish | (noun) small mostly marine warm-water carp-like schooling fishes; used as bait or aquarium fishes or in mosquito control | - |
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| kingfish | (noun) any of several food and game fishes of the drum family indigenous to warm Atlantic waters of the North American coast | - |
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| (noun) large edible mackerel of temperate United States coastal Atlantic waters | Synonyms: cero, pintado, Scomberomorus regalis |
| (noun) small silvery marine food fish found off California | Synonyms: chenfish, Genyonemus lineatus, white croaker |
| (noun) large game fish of Australia and New Zealand | Synonyms: Seriola grandis |
| (noun) the lean flesh of any of several fish caught off the Atlantic coast of the United States | - |
| ladyfish | (noun) game fish resembling the tarpon but smaller | Synonyms: Elops saurus, tenpounder |
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| lancetfish | (noun) large elongate scaleless oceanic fishes with sharp teeth and a long dorsal fin that resembles a sail | Synonyms: lancet fish, wolffish |
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| lanternfish | (noun) small fish having rows of luminous organs along each side; some surface at night | - |
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| leatherfish | (noun) any of several brightly colored tropical filefishes | Synonyms: leatherjacket |
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| lionfish | (noun) brightly striped fish of the tropical Pacific having elongated spiny fins | - |
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| lizardfish | (noun) tropical fishes with large mouths in lizard-like heads; found worldwide | Synonyms: snake-fish, snakefish |
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| lumpfish | (noun) clumsy soft thick-bodied northern Atlantic fish with pelvic fins fused into a sucker; edible roe used for caviar | Synonyms: Cyclopterus lumpus |
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| lungfish | (noun) air-breathing fish having an elongated body and fleshy paired fins; certain species construct mucus-lined mud coverings in which to survive drought | - |
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| mayfish | (noun) black-barred fish of bays and coastal marshes of the Atlantic and Gulf Coast of the United States | Synonyms: Fundulus majalis, may fish, striped killifish |
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| monkfish | (noun) fishes having large mouths with a wormlike filament attached for luring prey | Synonyms: allmouth, angler, angler fish, anglerfish, goosefish, Lophius Americanus, lotte |
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| (noun) sharks with broad flat bodies and winglike pectoral fins but that swim the way sharks do | Synonyms: angel shark, angelfish, Squatina squatina |
| (noun) flesh of a large-headed anglerfish of the Atlantic waters of North America | - |
| moonfish | (noun) large elliptical brightly colored deep-sea fish of Atlantic and Pacific and Mediterranean | Synonyms: Lampris regius, opah |
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| (noun) any of several silvery marine fishes with very flat bodies | Synonyms: Atlantic moonfish, dollarfish, horse-head, horsefish, horsehead, Selene setapinnis |
| mosquitofish | (noun) silvery topminnow with rows of black spots of tropical North America and West Indies; important in mosquito control | Synonyms: Gambusia affinis |
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| muttonfish | (noun) similar to and often marketed as `red snapper' | Synonyms: Lutjanus analis, mutton snapper |
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| needlefish | (noun) fish with long tubular snout and slim body covered with bony plates | Synonyms: pipefish |
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| (noun) elongate European surface-dwelling predacious fishes with long toothed jaws; abundant in coastal waters | Synonyms: billfish, gar |
| numbfish | (noun) any sluggish bottom-dwelling ray of the order Torpediniformes having a rounded body and electric organs on each side of the head capable of emitting strong electric discharges | Synonyms: crampfish, electric ray, torpedo |
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| oafish | (adjective) ill-mannered and coarse and contemptible in behavior or appearance | Synonyms: boorish, loutish, neandertal, neanderthal, swinish |
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| oarfish | (noun) thin deep-water tropical fish 20 to 30 feet long having a red dorsal fin | Synonyms: king of the herring, Regalecus glesne, ribbonfish |
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| offish | (adjective) lacking cordiality; unfriendly | Synonyms: standoffish |
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| oilfish | (noun) very large deep-water snake mackerel | Synonyms: Ruvettus pretiosus |
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| oysterfish | (noun) a variety of toadfish | Synonyms: oyster-fish, oyster fish |
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| paddlefish | (noun) primitive fish of the Mississippi valley having a long paddle-shaped snout | Synonyms: duckbill, Polyodon spathula |
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| panfish | (noun) any of numerous small food fishes; especially those caught with hook and line and not available on the market | - |
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| parrotfish | (noun) gaudy tropical fishes with parrotlike beaks formed by fusion of teeth | Synonyms: polly fish, pollyfish |
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| pearlfish | (noun) found living within the alimentary canals of e.g. sea cucumbers or between the shells of pearl oysters in or near shallow seagrass beds | Synonyms: pearl-fish |
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| pigfish | (noun) found from Long Island southward | Synonyms: hogfish, Orthopristis chrysopterus |
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| (noun) found around the Great Barrier Reef | Synonyms: Achoerodus gouldii, giant pigfish |
| pilotfish | (noun) small pelagic fish often accompanying sharks or mantas | Synonyms: Naucrates ductor |
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| pinfish | (noun) similar to sea bream; small spiny-finned fish found in bays along the southeastern coast of the United States | Synonyms: Lagodon rhomboides, sailor's-choice, squirrelfish |
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| pipefish | (noun) fish with long tubular snout and slim body covered with bony plates | Synonyms: needlefish |
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| pollyfish | (noun) gaudy tropical fishes with parrotlike beaks formed by fusion of teeth | Synonyms: parrotfish, polly fish |
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