A popliteal cyst, also known as a Baker's cyst, is a fluid-filled swelling that causes a lump at the back of the knee.
the smallest category is species but from largest to smallest it will be: kingdom Phylum class order family genus and species and you can come up with another word for it to hâ¦elp you with it. so yeh there you go.
Description [edit]. The smallest species of Crenicichla (notably members of the C. wallacii species group) are no larger than 6â14 cm (2.4â5.5 in), and technically qualify as  dwarf cichlids  for the aquarium hobby â though their aggressive and voracious habits should let prospective keepers beware.