Actiniidae
Actiniidae is the largest family of sea anemones, to which most common, temperate, shore species belong. Most members of this family do not participate in symbioses with fishes. Three exceptions are the bubble-tip anemone, snakelocks anemone and Urticina piscivora.
The systematics of Actiniidae is often quite difficult. The problem with identification of genera within this family is that most species are readily distinguishable when alive but when fixated lose their color and some other features. Arrangement of tentacles is important in defining genera for Actiniaria families. There may be one tentacle per space between mesenteries or there may be more than one tentacle between each two mesenteries. Members of the family Actiniidae have one tentacle per space.
Genera
There are over 300 recognized species in 57 genera in Actiniidae. Genera in this family include:Actinia Linnaeus, 1767Actinioides Haddon & Shackleton, 1893Actinopsis Dana, 1856Actinostella Duchassaing, 1850Anemonia Risso, 1826Antheopsis Simon, 1892Anthopleura Duchassaing de Fonbressin & Michelotti, 1860Anthostella Carlgren, 1938Asteractis Verrill, 1869Aulactinia Verrill, 1864Bolocera Gosse, 1860Boloceropsis McMurrich, 1904Bunodactis Verril, 1899Bunodosoma Verrill, 1899Cancrisocia Stimpson, 1856Cladactella Verrill, 1928Condylactis Duchassaing de Fombressin & Michelotti, 1864Cribrina Hemprich & Ehrenberg in Ehrenberg, 1834Cribrinopsis Carlgren, 1922Dofleinia Wassilieff, 1908Entacmaea Ehrenberg, 1834Epiactis Verrill, 1869Glyphoperidium Roule, 1909Gyractis Boveri, 1893Gyrostoma Kwietniewski, 1898Henactis Rodríguez, 2012Isactinia Carlgren, 1900Isanemonia Carlgren, 1950Isantheopsis Carlgren, 1942Isoaulactinia Belém, Herrera & Schlenz, 1996Isosicyonis Carlgren, 1927Isotealia Carlgren, 1899Korsaranthus Riemann-Zurneck, 1999Leipsiceras Stephenson, 1918Macrodactyla Haddon, 1898Mesactinia England, 1987Myonanthus McMurrich, 1893Neoparacondylactis Zamponi, 1974Onubactis Lopez-Gonzalez, den Hartog & Garcia-Gomez, 1995Oulactis Milne Edwards & Haime, 1851Parabunodactis Carlgren, 1928Paracondylactis Carlgren, 1934Paranemonia Carlgren, 1900Parantheopsis McMurrich, 1904Paratealia Mathew & Kurian, 1979Phialoba Carlgren, 1951Phlyctenactis Stuckey, 1909Phlyctenanthus Carlgren, 1950Phymactis Milne Edwards, 1857PhymantheaPseudactinia Carlgren, 1928Spheractis England, 1992Stylobates Dall, 1903Synantheopsis England, 1992Tealianthus Carlgren, 1927Urticina Ehrenberg, 1834Urticinopsis Carlgren, 1927