Meaning of dark sleeper | Babel Free
Definitions
Odontobutis obscura, a freshwater goby found in East Asia
Examples
“In these species the eggs are defended most strongly, and feeding territories have also been reported for some of them (the dark sleeper and the common freshwater goby).”
CEFR level
B2
Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.
This word is part of the CEFR B2 vocabulary — upper intermediate level.