'Pearlfish' definitions:

Definition of 'pearlfish'

(from WordNet)
noun
Found living within the alimentary canals of e.g. sea cucumbers or between the shells of pearl oysters in or near shallow seagrass beds [syn: pearlfish, pearl-fish]

Definition of 'Pearlfish'

From: GCIDE
  • Pearlfish \Pearl"fish`\, n. (Zool.) Any fish whose scales yield a pearl-like pigment used in manufacturing artificial pearls, as the bleak, and whitebait. [1913 Webster] Pearlins