Rainbow Smelt
The rainbow smelt is a small, silvery, cucumber-scented fish that runs up coastal and Great Lakes tributaries in huge numbers each spring, a beloved dip-net and hook-and-line quarry.
๐๏ธ Last reviewed: July 2026
Overview
The rainbow smelt is a small, silvery, cucumber-scented fish that runs up coastal and Great Lakes tributaries in huge numbers each spring, a beloved dip-net and hook-and-line quarry. Smelt runs are a cherished seasonal tradition and the fish are a classic pan-fried delicacy.
Identification
Smelt are slim and silvery with a translucent greenish back, a large mouth with tiny teeth, an adipose fin, and a faint iridescent side stripe. They give off a distinctive cucumber smell when fresh.
Range & Habitat
They live in the sea and in the Great Lakes, running into coastal streams and tributaries to spawn in spring; landlocked populations fill many northern lakes.
Behavior & Diet
Smelt school in vast numbers, feeding on plankton and tiny invertebrates, and swarm up tributaries at night to spawn over gravel in early spring.
Best Seasons
The fishery is a spring event - the spawning run, often at night, when smelt pack the tributaries; winter ice fishing takes them in lakes.
How to Catch Them
Dip nets in the spawning streams where legal, and tiny hooks with bits of bait or small jigs through the ice and off piers for schooling fish.
Tackle & Rigs
A dip net for the run, or ultralight rods and multi-hook smelt rigs with tiny baits for hook-and-line fishing.
Landing, Handling & Release
Smelt are small and kept by the bucket; chill them quickly and clean by pinching or gutting.
Table Quality
Rainbow smelt are a delicacy - whole pan-fried or deep-fried, sweet and crisp, a classic fish-fry treat.
Common Mistakes
Missing the brief nighttime run and dip-netting where it is not permitted.
Regulations & Conservation
Smelt runs are managed with methods, seasons and limits that vary widely; dip-netting rules are strict. Always confirm the current state regulations before fishing. We do not give legal advice.
FAQ
Why do they smell like cucumber? It is a natural trait of fresh smelt.
How are they eaten? Whole, pan- or deep-fried - a classic delicacy.