| English | French |
| black thread scale | kermès longirostre (Ischnaspis filiformis, Ischnaspis longirostris) |
| capture thread | fil de capture |
| fungal thread | filament mycélien |
| golden thread-fin bream | cohana doré (Nemipterus virgatus) |
| mycelium thread | filament mycélien |
| thread bacteria | bactéries filiformes |
| thread-fin breams | \THB (Nemipterus spp.) |
| thread laver | cheveux de mer (Enteromorpha compressa) |
| thread laver | cheveux marins (Enteromorpha compressa) |
| thread-leaved water-crowfoot | renoncule à feuilles capillaires (Batrachium trichophyllum van den Bosch, Ranunculus trichophyllus Chaix) |
| thread rush | jonc filiforme (Juncus filiformis L.) |
| thread-sail filefish | bourse fil (Stephanolepis cirrhifer (Temminck and Schlegel,1850)) |
| thread-sail filefish | \FIL (Stephanolepis cirrhifer (Temminck and Schlegel,1850)) |