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  • between eyes not narrow, no bony ridge
    D 71-82; A 52-60
    Citharichthys abbotti, Veracruz Whiff
    top jaw 35-39% head
    lower head profile rounded
    gill rakers 21, 5-7 above
    LL straight, 42-49
  • wide, tapering oval
    adult head v wide, blunt, especially male
    v wide between eyes
    lower gill rakers long, slender, 18-24
    snout all scaled
  • elongate
    between eyes narrow, + ridge
    Citharichthys arctifrons, Gulf Stream Flounder, Gulf Stream Whiff
    top jaw < 33% head
    front snout: bony horn
    LL straight, 37-43
  • between eyes: not narrow, no ridge
    1st D ray 22-29% head
    D 68-77: A 48-56
    top jaw 39-44% head
    lower head profile angular
    gill rakers: 18, 4-6 upper
    LL straight, 42-50
  • eyes large
    snout with spine
    male: long snout spine, long top pectoral ray
    eye-side pelvic 6
    pectoral base - dark
    LL straight, 40-45
    snout with scales
  • eyes close-set, spine before
    D 90-95; A 70-76
    Citharichthys dinoceros, Spined Whiff, Doublespot Whiff
    top jaw: front canines overhang enclosed lower jaw
    gill rakers 3+7-10
    C: often 2 large spots
    D & A: row large spots
  • eyes large
    snout: spines
    male: long central D & A rays - > diamond shape
    male D & A: black blotch behind longest rays
    top jaw 39-44% head
    eye-side pelvic 5
    pectoral axil not dark
    LL straight, 33-37
    snout naked
  • body deep
    between eyes: narrrow + bony ridge
    D 79-82; A 59-63
    body & fins: dense, regularly arranged spots
    Citharichthys macrops, Spotted Whiff
    top jaw 39-44% head
    edge blind-side operculum: leaf-like cirri
    LL straight
  • body deep
    between eyes: narrow + bony crest
    D 69-74; A 54-56
    Citharichthys minutus, Minute Whiff
    top jaw 27-29% head
    gill rakers short, flat, 6-7 below
    LL straight, 34-36
    snout not scaled
  • eye small, between eyes narrow + crest
    elongate oval
    D 76-84; A 57-63
    end tail base: dark spot
    lower head profile angular
    gill rakers 3-5 + 11-12
    LL straight, 43-47
  • body deep
    eye small, between eyes narrow + crest
    D ~68; A ~52
    eye-side many small white flecks
    Citharichthys uhleri, Voodoo Whiff
    LL straight, 52-55
  • body deep
    between eyes: narrow + bony crest
    D 78-86; A 60-66
    Citharichthys valdezi, Venezuelan Whiff
    lower head profile angular
    gill rakers 3-5 + 7-9
    LL straight, 42-45
  • C 3 rear spots
    Cyclopsetta chittendeni, Mexican Flounder
    dark blotch under pectoral
    pectoral: plain, edge oblique, 14-16
    LL straight, 74-80
  • C: central blotch
    Cyclopsetta fimbriata, Spotfin Flounder
    dark blotch under pectoral
    pectoral: edge dark & straight, 11-12
    LL straight, 59-67
  • body deep
    scale edges & C margin dark
    Etropus crossotus, Fringed Flounder
    lower gill rakers 7-8
    LL straight
    scales: snout no, accessory no
  • body deep
    4-6 dark rings above & below LL
    Etropus cyclosquamus, Shelf Flounder
    lower gill rakers 3-6
    LL straight
    scales: + accessory, snout - not before nostrils, blind side smooth
  • body not deep
    Etropus delsmani delsmani, Delsman's Flounder
    lower gill rakers 6-7
    LL straight
    scales: snout no, accessory no
  • body deep
    Etropus rimosus, Gray Flounder
    lower gill rakers 3-6
    LL straight, 3 indistinct blotches
    scales: + accessories, snout to before nostrils, blind side rough
  • body deep
    eyes moderately separated
    D 74-85; A 59-68
    tail base: dark blotch
    Syacium gunteri, Shoal Flounder
    male: long top pectoral rays
  • elongate
    eyes not wide apart
    top eye not well behind bottom eye
    large female: between eyes < 15% lower eye
    small female: snout 82% length before top eye
    female: 2 dark blotches on LL
    Syacium micrurum, Channel Flounder
    male: no blue lines on snout
    male: long top pectoral rays
  • elongate
    male: eyes v wide apart; top eye well behind bottom eye
    large female: between eyes 25-60% lower eye
    small female: between eyes > 15% lower eye; snout 66% length before top eye
    female: little or no dark mottling
    Syacium papillosum, Dusky Flounder
    pectoral 3-4 dark bars
    male: blue lines on snout
    male: long top pectoral rays