One soft fin, no saw on the belly, nothing else to it.
First checkRun a finger along the belly, look at the front of the back fin, and check behind it. No saw-edged belly, no spines and no adipose fin is a minnow.
In forage terms the plainest family: a small fish with one soft dorsal fin, no spines anywhere, no saw-edged belly and no adipose fin. Almost every identification here is made by what is absent.MANITOBA-BAITFISH-GUIDEDispute
That is not a weakness. Absence is what separates a shiner from a young shad — no saw-edged keel — and from a young perch — no spines. Learn those two negatives and most small silver fish resolve.DFO-BAITFISH-PRIMER, MDC-GOLDEN-SHINERDispute
This entry deliberately stops at the family. Telling an emerald from a spottail from a golden shiner in the field is beyond what this reference supports.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 Shiners and minnows
Fish-shaped forage silhouette (minnow / shiner / fry) — not an insect+6
Moving as a school or tight bait cluster, not as a single insect+5
One soft dorsal fin only, with no spines (minnows, shads, herrings)+4
Argues against it
Spiny front dorsal fin, separate from or joined to a soft second dorsal (perch, sunfish)-5
No pelvic fins on the underside at all-5
Small fleshy fin between the dorsal fin and the tail-4
Last dorsal ray drawn out into a long trailing thread-4
Body long and thin, many times longer than it is deep-4
One dorsal fin running most of the length of the back-4
Two dorsal fins with a clear gap between them-4
Rows of smaller spots trailing behind the shoulder spot-4
Tail fin rounded or squared off, not forked-4
Head wide and flattened, wider than the body behind it-4
Sits on the bottom and darts — it does not hover-4
Dives into clean sand and disappears-4
Sawtooth belly — a row of sharp scutes along the midline you can feel-3
Dark opercular flap (ear flap) at the rear corner of the gill cover-3
Big fan-shaped side fins the fish props itself on-3
Dark vertical bars down the flank, not a horizontal stripe-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.
no reviewed plateNo plate is drawn for this group, and that is a decision rather than a backlog item. This family is identified by what is missing — no belly keel, no spines, no adipose fin, no thread off the back fin — so a drawing of one shiner would be asserting a shape the record does not claim for the family. Read the four absences below instead. A plate becomes possible here the day this entry narrows to a named species.Shiners and minnows — Adultgap
These groups name Shiners and minnows in their own separators. If you arrived holding one of them and were not sure, this is the sentence that pointed you over.
Alewife / river herringsaid
A sawtooth belly rules out every minnow. The golden shiner's belly keel is soft and scaleless, not saw-edged.
Where in the column it mattersJust under the surface. Large schools in midwater or right at the surface, and close to shore and vegetation. The shallowest and most visible of the forage fish here.
Read from the record's own position notes: large schools in midwater or at the surface; near shore and around vegetation.
What eats it
Which fish the dossiers actually name.
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 reviewerFamily-level only. Species separation within Cyprinidae is not supported here.Dispute
Declared by the reviewerNo source consulted stated whether young-of-year minnows school separately from adults.Dispute
Declared by the reviewerCarp and goldfish are cyprinids but carry a stout spine at the front of the dorsal and anal fins.CTDEEP-MINNOWSDispute
Declared by the reviewerNo plate is drawn here, on purpose: the family is defined by absences and a picture of one shiner would over-claim. See the note in the plate frame.Dispute
Declared by the reviewerThis record covers the family, not a species. Separating emerald from spottail from golden shiner in the field is beyond what this reference supports.Dispute
PlateNo plate is drawn for this group, and that is a decision rather than a backlog item. This family is identified by what is missing — no belly keel, no spines, no adipose fin, no thread off the back fin — so a drawing of one shiner would be asserting a shape the record does not claim for the family. Read the four absences below instead. A plate becomes possible here the day this entry narrows to a named species.
Sources disagreeThe spottail shiner's tail spot is a 'large black caudal spot' to Fisheries and Oceans Canada but 'sometimes inconspicuous' to Connecticut DEEP, and Manitoba says it is not always noticeable on larger live fish.
Sources disagreeSize figures differ between agencies: Missouri gives fathead 1.5 to 2.75 inches and golden shiner to about 8 inches; Fisheries and Oceans Canada gives typical and maximum lengths of 50 and 100 mm for fathead and 100 and 230 mm for golden shiner.
Sources disagreeFamily placement differs: Missouri Department of Conservation and Illinois DNR place these shiners and the fathead in Leuciscidae; Fisheries and Oceans Canada and Manitoba keep them in Cyprinidae.
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.
SeasonalityNo reference window is published for this group, so this entry says nothing about when it is available. That is an absence in the calendar layer, not a claim that the animal has no season.
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 7 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.
Engbretson Underwater Photography. How a loose shoal holds, sculls and breaks under a predator. A minnow is identified by its dorsal fin and encountered as a shoal.
Working biologist · external video · title read back from the publisher 2026-09-09
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Which fish in this kind of water are documented eating this class of forage, and how they behave when they are.
What this forage class asks of the setup — the weight it wants, and where the chain gives first.
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