sargassumfish

[sahr-gas-uh m-fish]
noun, plural sar·gas·sum·fish·es, (especially collectively) sar·gas·sum·fish.
  1. an olive-brown and black frogfish, Histrio histrio, inhabiting tropical Atlantic and western Pacific seas among floating sargassum weed.

Origin of sargassumfish

First recorded in 1900–05; sargassum + fish
Also called mousefish.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018