Yes, striped bass can smell. Young striped bass raised in a Delaware lab picked out the water of real tidal creeks by smell, and told a predator's scent from a non-predator's. In aquaculture tanks, striped bass ate more of a feed laced with amino acids and two other compounds. What nobody has measured is the part anglers argue about at the tackle shop: how far away a big striper can smell a chunk of bunker, or whether it will follow a scent trail to find it. That study does not exist.
So the honest answer is two answers. Smell works. Smell as a long-range beacon is a belief, not a finding.
What has been measured
Three kinds of work, and none of them on a grown fish in open water.
Young fish, choosing a home. For a 2020 master's thesis at the University of Delaware, Taylor Deemer raised striped bass in aquariums, so they had never smelled outside water, then offered them chemical cues from five tidal watersheds on the Delaware coast. The larvae could identify cues tied to nursery habitat. The juveniles went further: they told the watersheds apart by how degraded the land around them was. The young fish could also tell predator cues from non-predator cues. The thesis concludes that the species has "well developed chemoreception abilities."
That is a real result about a real sense, with two limits worth knowing. It is a thesis, not a peer-reviewed paper. And the fish were larvae and juveniles asking where to live and what might eat them, not adults asking where dinner is.
Fish with food in front of them. Fish farmers want cheap plant-based feeds that fish will actually eat, so Elias Papatryphon and Joseph Soares tested feeding stimulants on striped bass. In a 2002 paper they mixed four compounds into an agar gel: the amino acids alanine and serine, a compound called IMP (inosine monophosphate), and betaine. Then they measured how much the fish ate.
| What they tested | What they found |
|---|---|
| Each compound alone, from 0 to 8% of the gel | No significant gain in intake past 1% for any of them |
| Which single compound worked best | Alanine, ahead of the other three |
| All four together | Maximal stimulation |
| The best mix | Alanine 0.4%, serine 0.6%, betaine 0.4%, IMP 0.3% of the gel |
In a companion paper, a nearly identical mix added to ordinary pelleted diets raised how much the fish ate, with no further gain beyond the base dose, and a double dose improved growth on both a fish-meal and a plant-based diet.
The authors describe what they were working on as gustatory stimulation and palatability. In plain words, taste. The fish was already at the food. The tests measured whether it ate more, not how far it would travel to get there. And these were farmed fish in tanks, not wild fish in a current.
The eye. The sense that has been measured well in striped bass is sight. A 2010 study recorded the eyes of four Chesapeake Bay predators and concluded that the open-water hunters, striped bass among them, are "well adapted to bright photoclimates," calling them visually foraging fish. Much more on that in can striped bass see color.
What has not been measured
We searched the Europe PMC research index for striped bass, or Morone saxatilis, alongside olfactory, olfaction, chemosensory, chemoreception, odor and feeding stimulant, and ran similar searches through Crossref. The two Europe PMC searches returned 128 and 59 records. Not one measured an adult striped bass's sense of smell. The feed-stimulant papers and the Delaware thesis were the only smell-related work on the species we could find.
So, for an adult striped bass, nobody has published:
- A threshold: the weakest concentration of a prey odor it can detect.
- A distance: how far down-current a fish can pick up a scent.
- A trail test: whether a striper turns into an odor and follows it to its source.
- A bait test: whether fresh bunker outfishes day-old bunker, or a scented soft plastic outfishes the same plastic unscented, in striped bass.
None of that means stripers cannot track a scent. It means the claim is untested, which is different from false.
Where the long-range idea comes from
The belief has a respectable source. Nick Karas, in his 1993 book The Striped Bass, reasoned that because the surf always carries sand in suspension, a bass there likely smells its food before it ever sees it. That is an experienced surf fisherman's read of the conditions, and it may be right. It is also one angler's argument, not a measurement. And the one sense that has been measured points the other way for daytime: the eye of a fish built to hunt in good light.
A different smell story, that a hooked fish puts something in the water that shuts the school down, comes from carp and minnows rather than bass. We took that one apart in can you spook a school of striped bass.
What to do with it
This is inference from the gap, not a tested rule.
- Treat scent as a close-range closer. The only measured effect on striped bass is a fish with food in front of it eating more. If scent helps you, the likeliest place is the last foot: turning a bump into a take.
- Do not rely on scent to call fish in. Put the bait where water and structure would carry a fish past it anyway: the edge of the rip, the lip of the hole, the seam off the rock. A scent trail is a bonus, not the plan.
- Fresh bait is experience, not data. Plenty of bait fishermen swear by fresh bait. They may be right. No one has run the test on striped bass, so trust your own log over anyone's certainty, ours included.
- Dirty water and dark nights are the open question. When sight fails, smell and the sense of feel are the obvious candidates to take over. That is logical, and in adult striped bass it is unmeasured.
How StripedLines uses this
StripedLines is built for striped bass. It does not know whether you are throwing a chunk, a live eel or a plug. When you log a trip you can mark the method as live or cut bait; that record stays with your trip. The rating ranks places by their water and conditions. It is never a chance of catching.