Commensal Relationship
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Commensal Relationship
Commensalism is a long-term biological interaction (symbiosis) in which members of one species gain benefits while those of the other species neither benefit nor are harmed. This is in contrast with mutualism (biology), mutualism, in which both organisms benefit from each other; Symbiosis#Amensalism, amensalism, where one is harmed while the other is unaffected; and parasitism, where one is harmed and the other benefits. The commensal (the species that benefits from the association) may obtain nutrients, shelter, support, or locomotion from the host species, which is substantially unaffected. The commensal relation is often between a larger host and a smaller commensal; the Host (biology), host organism is unmodified, whereas the commensal species may show great structural adaptation consistent with its habits, as in the remoras that ride attached to sharks and other fishes. Remoras feed on their hosts' fecal matter, while pilot fish feed on the leftovers of their hosts' meals. N ...
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Echeneis Naucrates 241647485
An echeneis () is a legendary creature; a small fish that was said to latch on to ships, holding them back. Pliny the Elder (1st century AD) also said of the echeneis: "It has a disgraceful repute, as being employed in love philtres, and for the purpose of retarding judgments and legal proceedings—evil properties, which are only compensated by a single merit that it possesses—it is good for staying fluxes of the womb in pregnant women, and preserves the fœtus up to birth: it is never used, however, for food." In his Quaestiones Convivales, Plutarch gives a detailed description of the creature. They were said to be found in the Indian Ocean.Echeneis at the Medieval Bestiary
Accessed 28 February 2016
Gudger, E. W. (1918)

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