From ꠁꠌꠣ (isa) and ꠝꠣꠍ (masó, “fish”). Former is from Prakrit *𑀇𑀁𑀘𑀸𑀅 (*iṃcāa), from Sanskrit इञ्चाक (iñcāka).
ꠁꠌꠣ ꠝꠣꠍ • (isa mas)