Southern one-feather rock trout
Pleurogrammos azonus
Southern one-feather rock trout     Because of its similarity with the river perch, the southern one-feather rock trout is sometimes incorrectly called the Far Eastern perch. This species may occur in various periods of its life far from shore and in shallows. It lives now at the very sea floor to occasionally rise into thick water. It has well-developed vision and organs that sense water vibrations. These organs are situated along the body in the form of four lines (two above and two below, along the abdomen). The southern one-feather rock trout is 35-45 cm long, and its weight is up to 1.5 kg.
    The rock trout is a good swimmer. It fattens and winters deep inside the water to approach the coastline to spawn. The males approach the shores slightly earlier than the females to occupy sites with rocky floors suitable for laying roe. After persistent wooing, the females would spawn their roe to swim away, and the male would fertilize the roe mass to wait for new females. This rock trout reproduces in September-October on rocky sites. It protects the roe masses, which are situated 15-20 m deep, chasing away all fish appearing within his field of vision. When this species reproduces on a mass scale, sea perches are ousted from their territory. After spawning is over, the males would for some time continue to protect the roe sites to depart from the coast together with the females to fatten when larvae appear. The rock trout is a commercial fish with tasty flesh used for making, in addition to various canned goods, smoked and cured fillets.