fish
inverts
   Annelida
   Arthropoda
   Bacteria
   Cnidaria
   Mollusca
     Gastropoda
       cephalopods
       snails
         Anentome
         eggs
         Marisa
           cornuarietis
         mystery
         Nerite
         Notopala
         Paludomus
         ramshorns
         Theodoxus
         Tylomelania
         Vittina
         viviparus
     Bivalvia
   Porifera
   Protozoa
misc
plants