fish and shrimp, n. — Green’s Dictionary of Slang

fish and shrimp n.

[rhy. sl.]

a procurer, a pimp.

1935		A.J. Pollock Und. Speaks.
1949		Monteleone Criminal Sl. (rev. edn).
1969		S.T. Kendall Up the Frog.
1978		Maledicta II:1+2 (Summer/Winter) 118: Elsewhere Aylwin lists a few more ‘Vulgarities’: [...] pimp (fish and shrimp), love (heavens above), kiss (hit or miss again).
2003		B. Dark Dirty Cockney Rhy. Sl.