scopeloid

from The Century Dictionary.

• Of or relating to the Scopelidæ.
• noun A member of the Scopelidæ.
• In anthropology, noting a cranium which has a summit on its posterior part and an occiput rapidly descending to the wide base.

from the GNU version of the Collaborative International Dictionary of English.

• adjective (Zoöl.) Like or pertaining to fishes of the genus Scopelus, or family Scopelodæ, which includes many small oceanic fishes, most of which are phosphorescent.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• adjective zoology Like or relating to fishes of the genus Scopelus, or family Scopelidae, including many small marine fishes, most of which are phosphorescent.
• noun zoology Any fish of the family Scopelidae.