Blunt head, small mouth, two back fins, and a habit of leaving the water for no reason anyone can prove.
First checkLook at the head end. Blunt, flat, and a small mouth at the very front, with two widely separated back fins behind it — mullet.
Mullet are the one fish in this wave that everybody has watched and almost nobody has looked at. They jump — sometimes a metre clear — and four different agencies give four different explanations for why. To evade predators. To clean the gills. To get oxygen out of warm stagnant water. And, from Connecticut, with admirable directness: for unclear reasons. Four sourced answers and no settled one is a perfectly good thing for a field guide to say.Dispute
What you can settle is the fish. A mullet is rounded and stout and silvery with a blunt, flattened head and a small mouth right at the front — and, seen from underneath, that mouth reads as an inverted V. Two dorsal fins set well apart, the first carrying four spines. Short pectoral fins high on the flank. A thick adipose eyelid over part of the eye, which one North Carolina document notes becomes visible to the naked eye at about 42 mm, which is exactly the size you are most likely to be holding one.Dispute
The stripes come late. Below about six inches a striped mullet may show none at all, and that is where the honest trouble starts: a striped and a white mullet at that size are separated by counting eight anal rays against nine, by a gold spot on the gill cover of a living white mullet that fades fast after capture, and by whether scales run onto the second dorsal and anal fins. Those are real, sourced characters. None of them is easy in a rip with wet hands.Dispute
The tell
What settles it, and what settles against it.
Read off this record's own diagnostic weights, heaviest first. A structure near the top of the left column does most of the work on its own; one near the bottom only leans.
Argues for Mullet (young)
Blunt, flattened head with a small mouth at the front+7
Fish-shaped forage silhouette (minnow / shiner / fry) — not an insect+6
Two dorsal fins with a clear gap between them+6
Moving as a school or tight bait cluster, not as a single insect+5
Rounded, cigar-shaped body — not slab-sided+3
Spiny front dorsal fin, separate from or joined to a soft second dorsal (perch, sunfish)+2
Head wide and flattened, wider than the body behind it+1
Argues against it
One dorsal fin running most of the length of the back-5
No pelvic fins on the underside at all-5
Mouth angled upward, the lower jaw leading-4
Body long and thin, many times longer than it is deep-4
Dives into clean sand and disappears-4
Sawtooth belly — a row of sharp scutes along the midline you can feel-4
Last dorsal ray drawn out into a long trailing thread-4
Rows of smaller spots trailing behind the shoulder spot-4
Dark opercular flap (ear flap) at the rear corner of the gill cover-4
Body translucent — light passes through it, and the backbone or gut shows-4
Tail fin rounded or squared off, not forked-4
One soft dorsal fin only, with no spines (minnows, shads, herrings)-3
Snout overhangs the mouth, its tip in front of the jaw-3
Dark spot just behind the upper edge of the gill cover-3
Dark vertical bars down the flank, not a horizontal stripe-3
Big fan-shaped side fins the fish props itself on-3
Sits on the bottom and darts — it does not hover-3
Deep-bodied and strongly flattened side to side-2
Small fleshy fin between the dorsal fin and the tail-2
Eye diameter greater than the length of the snout-2
A structure at −4 or below is treated as a hard exclusion by the comparison tool rather than as a penalty: if you saw it, this group is ruled out and no amount of matching elsewhere brings it back. Run a comparison →
Life stages
What it looks like, stage by stage.
Mullet (young) — First yeardrawn
First yearthe stage a fish meets
Size in hand15–178 mm; pre-juveniles reach the outer beaches at 20–25 mm and enter North Carolina estuaries at about 22 mmNCDMF-MULLET-FMP-2006, TPWD-STRIPED-MULLETEvidence from: North Carolina estuary entryDispute
What you see
The blunt head and small terminal mouth are already the giveawayDispute
Stripes are absent below about six inches, so their absence means nothing at this sizeDispute
Where it turns up
Inshore into tidal creeks from about an inch long; beaches, flats, lagoons, bays and channels.Dispute
How it moves
Schooling; and jumping, which starts early.Dispute
Cues this stage offers the comparison
Blunt, flattened head with a small mouth at the front
Two dorsal fins with a clear gap between them
Fish-shaped forage silhouette (minnow / shiner / fry) — not an insect
Moving as a school or tight bait cluster, not as a single insect
Mullet (young) — Full-growndrawn
Full-grown
Size in hand283–698 mm for North Carolina striped mullet (males mature at 283 mm, females at 319); white mullet are common only to about 330 mm; larger maxima published elsewhereNCDMF-MULLET-FMP-BASE, FLFWC-WHITE-MULLETEvidence from: North CarolinaDispute
What you see
Two well-separated dorsal fins, the first with four spinesDispute
Blunt flattened head, small mouth, a bump at the tip of the lower lipDispute
Seen from below, the mouth is an inverted VDispute
Faint horizontal lines formed by a dark spot at the centre of each scaleDispute
Huge surface schools over sand or mud, close to shore around river and stream mouths and in brackish bays and inlets.Dispute
How it moves
Feeds by sucking in bottom sediment and scraping at grass. Moves toward and along the coast in autumn — a movement two sources tie to north or northwest winds and cold fronts.Dispute
Cues this stage offers the comparison
Blunt, flattened head with a small mouth at the front
Two dorsal fins with a clear gap between them
Spiny front dorsal fin, separate from or joined to a soft second dorsal (perch, sunfish)
Fish-shaped forage silhouette (minnow / shiner / fry) — not an insect
Moving as a school or tight bait cluster, not as a single insect
Confused with
Telling it from what it isn't.
Mullet (young)vsSilversides
Both carry two dorsals. Connecticut states the separation directly: a young mullet has fewer anal rays and the anal fin starts directly under the dorsal.
One dorsal, a sawtooth belly and a shoulder spot is menhaden. No consulted source makes this comparison directly — it is assembled character by character, and is flagged as such.
Where in the column it mattersJust under the surface. Schools near the surface but feeds on the bottom, so the fish is regularly in two bands for two different reasons.
Read from the record's own position notes: huge schools near the surface over sand or mud; close to shore around the mouths of streams and rivers, in brackish bays, inlets and lagoons.
Reference windows
When this group is typically available.
Typical published ranges only. Elevation, latitude, tailwater release and a given year's weather move all of these, often by weeks. This is never a statement about today.
1 reference window
Autumn migrationadult
JFMAMJJASOND
In North Carolina, adult striped mullet move toward ocean spawning grounds in autumn and young mullet run south along the beaches in September and October. Many adults stay resident. This window is the migration, not a promise that a beach holds them inside it.
Observed: Dated from North Carolina. In South Carolina and Texas the spawning run peaks November to December.
No reviewed dossier names this group. That is an absence in the dossier layer rather than a finding about the animal — four dossiers exist and only one of them names any forage group at all.
Nothing in the pattern layer is mapped to this group, so no presentation family follows from it here.
Not known
What this entry cannot tell you.
14 of them. The limits are part of what was reviewed rather than a disclaimer bolted on afterwards. An entry that hid them would be claiming more than it checked.
Written by the reviewer
Declared by the reviewerThe phrase “mullet run” is used by no source consulted; North Carolina records fishermen calling the movement a “mullet blow”. “Finger mullet” is North Carolina's name for young-of-year mullet.NCDMF-MULLET-FMP-2006, NCDMF-MULLET-FMP-BASEDispute
Declared by the reviewerTwo Florida sources contradict each other on where the second dorsal starts relative to the anal fin, so that character is not used.Dispute
Declared by the reviewerStripe onset is stated as after 40 mm by one source and as absent below about 150 mm by another. They cannot both describe the same transition.Dispute
Declared by the reviewerNo source consulted states whether mullet have belly scutes, a keel or an adipose fin.SCDNR-STRIPED-MULLETDispute
Declared by the reviewerBelow about six inches, striped and white mullet are genuinely hard to separate. The sourced characters are eight soft anal rays against nine (Florida's agency says nine to ten), a gold spot on the gill cover of a living white mullet that fades fast after capture and can be confused with a similar spot on striped mullet, and scales extending onto the second dorsal and anal fins of white mullet only.NCDMF-MULLET-JUV-ID, FLFWC-WHITE-MULLET, UFFLMNH-STRIPED-MULLETDispute
Declared by the reviewerThe phrase “mullet run” is used by no source consulted; North Carolina's plan records fishermen calling the autumn movement a “mullet blow”. “Finger mullet” is North Carolina's own term for young-of-year mullet, and a dealer market grade there.NCDMF-MULLET-FMP-2006, NCDMF-MULLET-FMP-BASEEvidence from: North Carolina usageDispute
Declared by the reviewerStripe onset is stated two ways — evident after 40 mm in one source, absent below about 150 mm in another. They cannot both describe the same transition and no source reconciles them.NCDMF-MULLET-FMP-2006, UFFLMNH-STRIPED-MULLET, NCDMF-MULLET-JUV-IDDispute
Sources disagreeTwo sources contradict each other on where the second dorsal fin starts relative to the anal fin — over its beginning in Florida's wildlife agency page, behind it in the Florida Museum's. This record does not use that character.
Sources disagreeMaximum size is published as 698 mm in North Carolina, 914 mm internationally, 1200 mm by the Florida Museum and 1194 mm by Connecticut. Different scopes, not blended here.
Sources disagreeFeeding time is stated two ways: Texas Parks and Wildlife says striped mullet feed around the clock, and the Florida Museum calls them diurnal feeders.
Sources disagreeA dark blotch at the base of the pectoral fin is attributed both ways: Florida's wildlife agency says striped mullet lack it and white mullet carry it, while the Florida Museum and South Carolina DNR describe a dark or purplish blotch there on striped mullet. This record does not use it.
Read off the record
Nobody typed these. They are fields that are empty, said out loud rather than left for you to notice from a section that simply is not there.
PatternsNo fly pattern in the pattern layer is mapped to this group. Whether anything imitates it is not answered here.
What eats itNo reviewed species dossier names this group. Some dossiers describe forage in class terms — small forage, insects, bait — and those are shown below, but a class description is not a reviewed link to this group and none is claimed.
Sources
Everything above rests on 10 published pages.
These are every page behind this entry. Where a reviewer traced a line above to the pages that carry it, that line names them itself, with where the evidence comes from when it is narrower than the whole entry. A line with no names beside it rests on this list as a whole: nobody has yet checked which page carried it, and naming one would be a mapping nobody made.
A plate shows shape. It cannot show a gill beating, a mask firing, or an animal reversing into sand — so where motion is the field mark, the entry points at motion. These are demonstrations, selected by hand and by publisher. Nothing here is a source: it changes no score, no window and no reviewed claim.
Florida Sportsman. The run as an event — nervous water, surface skipping, predators on the edges. That is how mullet are recognised before a head is ever seen.
Specialist angling channel · external video · title read back from the publisher 2026-09-09
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