fingerling

Etymology
From, equivalent to , from having the size of a human finger.

Noun

 * 1)   A juvenile fish that has developed scales and working fins.
 * 2)  A type of small potato grown primarily in North America.
 * 3) An infant weasel, stoat, ferret; esp. weasels.
 * 4)  Any finger-sized version of something typically larger.