Where does “muc-locha” come from?

muc-locha (Scottish Gaelic) comes from Scottish Gaelic muc, from Old Irish mucc, from Persian موش, from Middle Persian mwšk', from Sanskrit मुष्क, from Sanskrit मूष्, from Proto-Indo-European múh₂s — mouse.

muc-locha (Scottish Gaelic): European perch

Definitions

European perch

Ancestry of “muc-locha”, step by step

muc-locha traces back through two separate lines of ancestry.

via Scottish Gaelic muc

Step	Language	Word	Meaning
1	Scottish Gaelic	muc	pig; sow
2	Old Irish	mucc	pig, sow
3	Persian	موش	mouse; rat
4	Middle Persian	mwšk'	musk
5	Sanskrit	मुष्क	testicle, scrotum
6	Sanskrit	मूष्	mouse; "stealer", "thief"
7	Proto-Indo-European	múh₂s	mouse

via Scottish Gaelic loch

Step	Language	Word	Meaning
1	Scottish Gaelic	loch	lake; arm of the sea; fjord
2	Old Irish	loch	lake; inlet of the sea; black, dark
3	Proto-Celtic	loku	lake, pool
4	Proto-Indo-European	lókus	pond, pool

Every word from Proto-Indo-European múh₂s →Every word from Sanskrit मूष् →Every word from Sanskrit मुष्क →