Definition of "clupeid" []

• Any of various widely distributed soft-finned fishes of the family Clupeidae, which includes the herrings, menhadens, and sardines. (noun)
• Of, relating to, or belonging to the family Clupeidae. (adjective)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "The larva of the horse-mackerel, on the other hand, is like a tadpole; it swims better than a clupeid larva of the same size - thus enabling it to flee predators more easily - and it has a bigger mouth to capture more and bigger prey."