noun
Indian bait prawn (Palaemon pacificus)
A small marine shrimp species found in coastal waters of Japan and the Indo-Pacific; often used as fishing bait.
磯でイソスジエビを捕まえて釣り餌にした。
I caught some Indian bait prawns at the rocky shore and used them as fishing bait.
Compound of 磯 (iso, 'rocky shore') + 筋 (suji, 'stripe') + 蝦/海老 (ebi, 'shrimp'), referring to a striped shrimp found near rocky shores.