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sleeper

sleeper

8.8
A small fish that rests quietly on the bottom in shallow water
  • noun
  • /ˈsliːpər/
  • Australian
translation icon : eleótido
  • In the shallow waters of the reef, the sleeper quietly rested on the sand.
  • gobies and sleepers
  • smallscaled sleeper
  • spinycheek sleeper

Examples

  • And they are, I think, some of the loveliest sleepers in in that tribe.

  • Three of the others are also gobies, and the fifth is a close goby relative called a sleeper because of its sluggish behavior.

    Academic text (2004)
  • Yet most gobies and many sleepers in the world are marine.

    Academic text (2004)
  • Although sleepers lack a specialized sucker, they, too, often live in tide pools.

    Academic text (2004)
  • Gobies are the fish most often encountered in island streams, and in Pacific island streams, they are typically joined by sleepers.

    Academic text (2004)
  • Most fish species cannot tolerate such fluctuations, but some gobies and sleepers have adapted physiologically in ways that have enabled them to thrive.

    Academic text (2004)
  • A tolerance for low levels of salinity would enable a goby or sleeper to jump from the harsh, cramped environment of a tide pool to the wide fan of brackish water that forms where a stream enters the ocean.

    Academic text (2004)
  • Lacking the gobies' chest sucker, Hawai'i's freshwater sleeper (Eleotris sandwicensis) had to settle for life at sea level.

    Academic text (2004)
  • The sleeper fish is often found hiding among the rocks in the lagoon.

  • As the tide receded, the sleeper remained still on the ocean floor, blending in with its surroundings.

Synonyms

sleeper goby
vssleeper
  • Australian
9.5

A small tropical fish that rests quietly on the shallow sandy bottom

is the shorter name for the same fish in general use
4.1

A fish that lives near the bottom of lakes, rivers, or the sea

is narrower, referring to a small tropical goby-like fish resting in shallow water

Compounds

6 8.9

A secret group of people who stay inactive until told to attack or spy

7.1

A person who sleeps outside because they have no home

sleeper cell
  • Specialized
7.5

A hidden program in a computer network that stays inactive until activated to do harm

sleeper goby
  • Australian
9.5

A small tropical fish that rests quietly on the shallow sandy bottom

9.9

A hidden group of people who stay inactive until they get orders to do illegal or violent acts

How Active

free-swimming
  • Specialized
1 4.4
sleeper
  • Australian
8.8

Surface Forms

sleeper singular
sleepers plural

Morphology

sleeper = sleep (semi-transparent) = sleep + er

Derived from 'sleep' + '-er' referring to a creature characterised by resting behavior; the zoological term is specialized and not fully predictable for learners.

Etymology

Sleeper comes from the root sleep 'to rest'. The small fish is called a sleeper because it often rests motionless on the bottom like it is sleeping.