What is "sea poacher"

Lyrie \Ly"rie\ (l[imac]"r[i^]), n. [Icel. hl[=y]ri a sort of fish.] (Zo["o]l.) A European fish ( Peristethus cataphractum), having the body covered with bony plates, and having three spines projecting in front of the nose; -- called also noble, pluck, pogge, sea poacher, and armed bullhead.

n. small slender fish (to 8 inches) with body covered by bony plates; chiefly of deeper northern Pacific waters [syn: poacher, sea poker]