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  • dark scale edges - > cross-hatching
    D 7-8 (5-10)
    A 8-11
    Gambusia affinis, Western Mosquitofish, Mosquitofish
    gill rakers 5-12
    male: pectoral 5th ray scalloped, sex organ - no palp, + hooks above tip
    lateral scales 26-34
  • faint stripe along flank
    fins golden
    D7
    A 9
    Colombia
    Gambusia lemaitrei, Totumo Gambusia
    male: pectoral 5th ray scalloped, sex organ - no palp, + hooks above tip
    lateral scales 33
  • under eye - dark bar
    C top margin yellow
    D 6-7
    A 10
    Belize & Honduras
    Gambusia luma, Sleek Mosquitofish
    gill rakers 13-14
    male: pectoral 5th ray scalloped, sex organ - no palp, + hooks above tip
    lateral scales 29
  • D orange/yellow
    D 8
    A 9
    N Bahamas
    Gambusia manni, Bahama Gambusia
    male: pectoral 5th ray scalloped, sex organ - no palp, + hooks above tip
    lateral scales < 29
  • rows brown dots along scales
    male: lower C margin orange
    D 7-9
    A 8-11
    Belize to Panama
    Gambusia nicaraguensis, Nicaragua Mosquitofish
    male: pectoral 5th ray scalloped, sex organ - no palp, + hooks above tip
    lateral scales 29-30
  • 4-5 rows black dots along scale rows, central row - > dark line
    D, C & pectoral yellow
    A&pelvics bluish
    Cuba, Belize, S Florida
    Gambusia punctata, Cuban Gambusia, Spotted Gambusia
    male: pectoral 5th ray scalloped, sex organ - no palp, + hooks above tip
  • dark stripe back from eye
    dark line under tail base
    scale edges dark
    D 8-10
    A 10-11
    Caribbean Mexico, Guatemala, Cuba, Bahamas, Cayman, Jamaica
    Gambusia puncticulata, Caribbean Gambusia
    male: pectoral 5th ray scalloped, sex organ - no palp, + hooks above tip
    lateral scales 29-32
  • several lines conspicuous black dots along body
    fins yellowish
    D 8-10
    A 11
    Gambusia rhizophorae, Mangrove Gambusia
    male: pectoral 5th ray scalloped, sex organ - no palp, + hooks above tip, tip blunt, round
    lateral scales 28-30
  • faint dark stripe from eye along body
    D 8-10
    A 11
    Jamaica
    Gambusia wrayi, Jamaica Mosquitofish
    male: pectoral 5th ray scalloped, sex organ - no palp, + hooks above tip
    lateral scales 31-32
  • yellow/orange, bluish below
    iris blue
    short black line behind operculum
    D & C yellow-orange + grey margin
    A: white + orange
    Grand Cayman
    Gambusia xanthosoma, Cayman Gambusia
    male: pectoral 5th ray scalloped, sex organ - no palp, + hooks above tip
  • upper body - large brown spots
    male C: lower margin orange
    D 7-10
    A 10-11
    N Yucatan to Belize
    Gambusia yucatana, Yucatan Gambusia
    male: pectoral 5th ray scalloped, sex organ - no palp, + hooks above tip
    lateral scales 28-31