Fish in troubled waters
Figuratively: he sought to extract benefit as if from an inappropriate place. An endeavor in a problematic domain.
(He was a fish in troubled waters, trying to find benefit in an unworthy place.)
Translation
Expression (Hebrew)
דָּג בְּמַיִם עֲכוּרִים
Definition (Hebrew)
בְּהַשְׁאָלָה: נִסָּה לְפִיק תּוֹעֶלֶת כָּלְשֶׁהִי מִמָּקוֹם לֹא רָאוּי. עֵסֶק בִּתְחוּם בְּעָיָתִי.
(הָעִבְרִית הַחֲדָשָׁה בְּעִקְבוֹת הַבִּטּוּי "מַיִם עֲכוּרִים")