Thalassionema frauenfeldii
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| Taxonomic Group: | Diatom |
| Trophic Status: | Autotrophic |
| Size Range: | 5-7.5 ?m wide x 37.5-163.6 ?m long ( LUMCON Guide); 2-4 ?m wide x 90-210 ?m long (Cupp 1943); 54-200 ?m long (Tomas 1997) |
| Key Characteristics: | Valve ends slightly dissimilar in shape, one end more or less tapering and usually with a spine, the other end broader and rounded; cells united in star-shaped colonies |
| Confused With: | Thalassionema nitzschioides, which has generally shorter cells and valve ends that are similar |
| Toxin: | None known |