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n. pl. tonguefish or tongue·fish·es
Any of various marine flatfishes of the family Cynoglossidae, having the posterior part of the body tapering to a point.

[From its tongue-shaped body.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.tonguefish - left-eyed marine flatfish whose tail tapers to a pointtonguefish - left-eyed marine flatfish whose tail tapers to a point; of little commercial value
flatfish - 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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References in periodicals archive ?
The eggs of blackcheek tonguefish (Symphurus plagiusa), small-mouth flounder (Etropus microstomus), and butterfish (Peprilus triacanthus) were smallest on average; each species had one egg with a measured diameter of 0.57 mm.
The blackcheek tonguefish (Symphurus plagiusa) appeared to be a year-round resident species in the creek.
The bay whiff Citharichthys spilopterus was the most abundant species collected with a maximum mean CPUE of 34.7 recently settled juveniles in January 2005, while the black-cheek tonguefish Symphurus plagiusa was collected most regularly.
Tonguefish were observed skipping across pools of molten sulphur near undersea volcanoes in the western Pacific.
Common name Scientific Total name catch Total fish 2,562 Atlantic Micropogonias 1,124 croaker undulatus Red drum Sciaenops 440 ocellatus Darter goby Ctenogobius 245 boleosoma Naked goby Gobiosoma 245 bosc Bay anchovy Anchoa 109 mitchilli Black drum Pogonias 108 cromis Silver perch Bairdiella 104 chrysoura Pinfish Lagodon 33 rhomboides Bay whiff Citharichthys 30 spilopterus Skilletfish Gobiesox 28 strumosus Green goby Microgobius 25 thalassinus Blackcheek Symphurus 15 tonguefish plagiusa Southern Menticirrhus 12 kingfish americanus Spotted Cynoscion 11 seatrout nebulosus Striped Mugil 9 mullet cephalus Ladyfish Elops saurus 4 Shrimp eel Ophichthus 4 gomesii Pipefish Syngnathus 4 spp.
The remaining two species (spotted turbot (Pleuronichthys ritteri) and California tonguefish (Symphurus atricauda)) mainly occupied the channels of the north bay.
The Cynoglossidae family in the eastern Pacific Ocean is represented by a single subfamily (Symphurinae) and a single genus (Symphurus; tonguefish).
Although there is precedent for combining plural modifiers with nouns to form compound modifying words (e.g., 'spottedtail goosefish', 'spottedfin tonguefish', and 'stripedfin ronquil') in Robins et al.
The term "others" in the species list, refers to species represented by a single specimen of small size, and included the following species: mullet, catarina, barracuda and tonguefish. Note that all the species referred in Tables 4 and 5 are the most usually obtained as by-catch fauna in shrimp fishery in the Gulf of Tehuantepec.
Motile species Phylum Species Name Common Name Arthropoda Hexapanopeus angustifrons Narrow mud crab Limulus polyphemus Horseshoe crab Neopanope sayi Say's mud crab Pinnotheres ostreum Oyster pea crab Mollusca Aplysia brasiliana Sooty sea hare Busycon contrarium Lightening whelk Busycon spiratum Pear whelk Fasciolaria hunteria Banded tulip Fasciolaria mlipa True tulip Melongena corona Crown conch Pleuroploca gigantean Florida horse conch Polinices duplicates Atlantic moon snail Chordata Svmphurus plagiusa Blackcheek tonguefish TABLE 3.