singingfish
[
sing
-ing-fish]
/ˈsɪŋ ɪŋˌfɪʃ/
noun
,
plural
(
especially collectively
)
singingfish
(
especially referring to two or more kinds or species
)
singingfishes.
1.
midshipman
(def 3).
Origin
1880-85,
Americanism;
singing
+
fish
; so called because of the humming sound it produces with its air bladder