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  • sword flattened
    D1 high, curved, short base
    D2 & A2 tiny
    C base - 1 keel
    no pelvics
  • +/- ~20 blue bars
    D1 = large long sail, dark blue + black spots
    pelvics very long, thin
  • moderately compressed
    nape low
    D lobe =/> body depth
    pectoral & D & A lobes: round
    +/- iridescent bars; D black spots
    anus near A (<1/2 A height)
    1 obvious LL
    scales stiff, elongate, 1-2 rear points
  • not v compressed
    nape high
    D lobe < body depth
    pectoral & D & A lobes: pointed
    pelvic < pectoral
    ~15 blue bars; D no spots
    anus near A
    LL: looping line/mesh, often obscure
  • not v compressed
    sword not short
    nape low
    D lobe =/> body depth, rest of fin decreases in height
    D & A lobes: round/square
    pectoral pointed
    pelvic ~pectoral
    LL: 1 obvious straight line
    body +/- blue bars; no spots on D
    anus before A by ~1/2 A height
    flank scales: soft, round base, 2-3 points
  • elongate, slender, very compressed
    sword ~head
    nape low
    D lobe =/> body depth, rest of fin high
    D & A front: rounded
    pectoral wide, long, rounded
    pelvic ~/> pectoral
    D & body: no spots/bars
    anus before A by ~A height
    LL: 1 obvious straight line