いとひきふえたいでしょう
糸引笛鯛でしょう
ito hikifuetaideshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of いとひきふえだい

1. Probably threadfin poacher.

Polite
Presumptive
Conjecture
Usually Written in Kana