List of eukaryotic species that belong to picoplankton, meaning one of their cell dimensions is smaller than 3 μm.
Autotrophic species
Prasinodermophyta Prasinococcus capsulatus Miyashita et Chihara, 3 – 5.5 μm, marine Prasinoderma coloniale Hasegawa et Chihara, 2.5 – 5.5 μm, marine
Chlorophyta
Chlorophyceae Stichococcus cylindricus Butcher, 3 – 4.5 μm, brackish
Pedinophyceae Marsupiomonas pelliculata Jones et al., 3 – 3 μm, brackish-marine Resultor micron Moestrup, 1.5 – 2.5 μm, marine
Mamiellophyceae Bathycoccus prasinos Eikrem et Throndsen, 1.5 – 2.5 μm, marine Crustomastix stigmatica Zingone, 3 – 5 μm, marine Dolichomastix lepidota Manton, 2.5 – 2.5 μm, marine Dolichomastix eurylepidea Manton, 3 μm, marine Dolichomastix tenuilepis Throndsen et Zingone, 3 – 4.5 μm, marine Mantoniella squamata Desikachary, 3 – 5 μm, marine Micromonas pusilla Manton et Parke, 1 – 3 μm, marine Ostreococcus tauri Courties et Chrétiennot-Dinet, 0.8 – 1.1 μm, marine Picocystis salinarum Lewin, 2 – 3 μm, hypersaline
Pyramimonadophyceae Pseudoscourfieldia marina Manton, 3 – 3.5 μm, marine Pycnococcus provasolii Guillard, 1.5 – 4 μm, marine Pyramimonas virginica Pennick, 2.7 – 3.5 μm, marine
Trebouxiophyceae Chlorella nana Andreoli et al., 1.5 – 3 μm, marine Picochlorum oklahomensis Henley et al., 2 – 2 μm, hypersaline Picochlorum atomus Henley et al., 2 – 3 μm, brackish Picochlorum eukaryotum Henley et al., 3 – 3 μm, marine Picochlorum maculatus Henley et al., 3 – 3 μm, brackish
Cryptophyta
Cryptophyceae Hillea marina Butcher, 1.5 – 2.5 μm, marine
Haptophyta
Prymnesiaceae Chrysochromulina tenuisquama Estep et al., 2 – 5 μm, marine Chrysochromulina minor Parke et Manton, 2.5 – 7.5 μm, marine Chrysochromulina apheles Moestrup et Thomsen, 3 – 4 μm, marine Dicrateria inornata Parke, 3 – 5.5 μm, marine Ericiolus spiculiger Thomsen, 3 – 3.8 μm, marine Imantonia rotunda Reynolds, 2 – 4 μm, marine Phaeocystis cordata Zingone, 3 – 4 μm, marine Phaeocystis pouchetii Lagerheim, 3 – 8 μm, marine Trigonaspis minutissima H.A.Thomsen, 2 – 3.6 μm, marine
Heterokontophyta (Stramenopiles)
Bacillariophyceae Minidiscus comicus Takano, 2 – 7 μm, marine Minidiscus trioculatus Hasle, 2.5 – 3.8 μm, marine Minidiscus spinulosus Gao, Chang et Chin, 3 – 5 μm, marine Minidiscus chilensis Rivera, 3 – 7.5 μm, marine Minutocellus polymorphus Hasle, von Stosch et Syverstsen, 2 – 30 μm, marine Minutocellus scriptus Hasle, von Stosch et Syverstsen, 3 – 36 μm, marine Skeletonema menzelii Guillard, Carpenter et Reimann, 2 – 7 μm, marine Skeletonema pseudocostatum Medlin, 2 – 9 μm, marine Skeletonema japonicum Zingone et Sarno, 2 – 10 μm, marine Skeletonema grethae Zingone et Sarno, 2 – 10.5 μm, marine Skeletonema marinoi Sarno et Zingone, 2 – 12 μm, marine Thalassiosira pseudonana Hasle et Heimdal, 2.3 – 5.5 μm, marine
Bolidophyceae Bolidomonas pacifica Guillou et Chrétiennot-Dinet, 1 – 1.7 μm, marine Bolidomonas mediterranea Guillou et Chrétiennot-Dinet, 1 – 1.7 μm, marine
Chrysophyceae Ollicola vangoorii Conrad (Vors), 2.5 – 5 μm, marine Tetraparma pelagica Booth et Marchant, 2.2 – 2.8 μm, marine Tetraparma insecta Bravo-Sierra et Hernández-Becerril, 2.8 – 3.8 μm, marine Triparma laevis Booth, 2.2 – 3.1 μm, marine Triparma columacea Booth, 2.3 – 4.7 μm, marine Triparma retinervis Booth, 2.7 – 4.5 μm, marine
Dictyochophyceae Florenciella parvula Eikrem, 3 – 6 μm, marine
Eustigmatophyceae Nannochloropsis granulata Karlson et Potter, 2 – 4 μm, marine Nannochloropsis salina Hibberd, 3 – 4 μm, brackish Nannochloropsis oceanica Suda et Miyashita, 3 – 5 μm, marine
Pelagophyceae Aureococcus anophagefferens Hargraves et Sieburth, 1.5 – 2 μm, marine Aureoumbra lagunensis Stockwell et al., 2.5 – 5 μm, marine Pelagococcus subviridis Norris, 2.5 – 5.5 μm, marine Pelagomonas calceolata Andersen et Saunders, 2 – 3 μm, marine
Pinguiophyceae Pinguiochrysis pyriformis Kawachi, 1 – 3 μm, marine Pinguiococcus pyrenoidosus Andersen et al., 3 – 8 μm, marin
Heterotrophic species
Cercozoa
Cercomonadida Massisteria marina Larsen et Patterson, 2.5 – 6.5 μm, marine
Plasmodiophorida Phagomyxa odontellae Kühn, Schnepf & Bulman, 3 – 4 μm, marine
Stramenopiles
Bicosoecida Caecitellus parvulus Patterson et al., 3 – 10 μm, marine Pseudobodo minima Ruinen, 2 μm, marine Symbiomonas scintillans Guillou et Chrétiennot-Dinet, 1.2 – 1.5 μm, marine
Chrysophyceae Paraphysomonas imperforata Lucas, 1.7 – 5.1 μm, marine Paraphysomonas corbidifera Pennick and Clarke, 2 – 3.25 μm, marine Paraphysomonas antarctica Takahashi, 2 – 4.3 μm, marine Paraphysomonas caelifrica Preisig and Hibberd, 2.5 – 5 μm, marine Paraphysomonas cribosa Lucas, 3 – 4 μm, marine Paraphysomonas sideriophora Thomsen, 3 – 5 μm, marine Paraphysomonas capreolata Preisig and Hibberd, 3 – 6.5 μm, marine Paraphysomonas gladiata Preisig and Hibberd, 3 – 8 μm, marine Picophagus flagellatus Guillou et Chrétiennot-Dinet, 1.4 – 2.5 μm, marine