Other Conditions Causing Yellow Toenails. Although fungal infection is the most likely cause of yellow toenails, rarely, some other disease conditions can also result in yellow toenails. Some of these conditions are psoriasis, jaundice, paronychia, lymphedema, bronchiectasis, tuberculosis and sinusitis.
1. a plant or animal that lives upon or within another living organism at whose expense it obtains some advantage; see symbiosis. 2. the smaller, less complete member of asymmetrical conjoined twins, attached to and dependent upon the autosite.parasitÂ´ic. malarial parasite Plasmodium.
Costia. Costia is a ciliated protozoan that can kill great numbers of fish in a very short time just like Chilodonilla. It can be active in cold water down to 45 degrees Fahrenheit. Small numbers of Costia are not uncommon and appear not be detrimental to the fishâs health.In small numbers these parasites seem to live on cellular debris in a commensalistic relationship with their fish host. It becomes a serious threat when, for various reasons, the parasite becomes established in large numbers.mall numbers of Costia are not uncommon and appear not be detrimental to the fishâs health. In small numbers these parasites seem to live on cellular debris in a commensalistic relationship with their fish host. It becomes a serious threat when, for various reasons, the parasite becomes established in large numbers.