Meaning
柳葉魚 (ししゃも, Shishamo) is Shishamo — a Japanese food (water animals).
What is Shishamo?
Shishamo (literally "Willow Leaf Fish") is a saltwater smelt (Spirinchus lanceolatus) about 15 cm in length. In Japanese cuisine, this fish is grilled or fried whole and served with its roe intact.