If it has fins and a school, stop calling it a bug.
First checkCount fins. If it schools, you are done naming insects.
Disambiguation entry. This group is here to stop a wrong call, not to make a right one. It is not an insect and it never hatches.
This entry exists so a forage observation is not forced into an insect order. Minnows, shiners, fry and shad are not a hatch.
The body plan is the tell: a fish-shaped silhouette, fins, a tail fin, often a school.
Never treat a forage result as a biological hatch cue.
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 Baitfish / forage silhouette
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
No long tail filaments visible+1
Argues against it
Three tail filaments clearly visible-5
Two tail filaments clearly visible-5
Portable case or case-like structure present-5
Plate-like or feather-like abdominal gills visible-5
Gills at the thorax or leg bases-5
Wings held upright (sailboat posture)-5
Wings held tent-like or inverted-V over body-5
No pelvic fins on the underside at all-5
Hardened head with softer worm-like abdomen-4
Terminal prolegs or hooks at the rear-4
Winged insect at or near the surface-4
Two long antennae-4
Wings held flat and parallel along the body-4
Fallen terrestrial insect (hopper, ant, beetle, etc.) — not an aquatic emergence-4
Hopper / grasshopper silhouette — hind legs long, body blocky, wings folded along back-4
Pinched waist (ant / flying ant) with elbowed antennae-4
Hard wing covers (elytra) meeting in a straight line down the back-4
Extendable grasping mouthparts (labium / mask) on an aquatic nymph-4
Three leaf-like caudal lamellae at the tail (damselfly nymph) rather than round filaments-4
Rows of smaller spots trailing behind the shoulder spot-4
Aquatic insect crawling on rock or debris-3
Air bubble or silvery film carried under water (diving beetle / water beetle)-3
Body long and thin, many times longer than it is deep-2
Tail fin rounded or squared off, not forked-2
Head wide and flattened, wider than the body behind it-2
Big fan-shaped side fins the fish props itself on-2
Sits on the bottom and darts — it does not hover-2
Dives into clean sand and disappears-2
One dorsal fin running most of the length of the back-1
Two dorsal fins with a clear gap between them-1
Blunt, flattened head with a small mouth at the front-1
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.
Baitfish / forage silhouette — Forage fish (juvenile or adult)drawn
Forage fish (juvenile or adult)
Size in hand10–150 mm (most observed forage 40–90 mm)
What you see
Fish-shaped body with fins and a tail fin
Often a school or tight cluster
No six legs, no insect wings, no cerci
Where it turns up
Mid-column, weed edges, points, shade lines.
How it moves
Flash, coordinated turns, dart-and-hold.
Cues this stage offers the comparison
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.
Baitfish / forage silhouettevsScud / Amphipod
A scud swims on its side with many pairs of legs. A forage fish has fins.
Where in the column it mattersMid column. The one forage class that holds station and moves as a unit, so its position is a decision rather than a life stage.
Read from the record's own position notes: mid-column or just under the surface; over weed edges and points; along shade lines and drop-offs.
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
Forage present year-roundadult
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Forage fish are not a hatch. Availability is continuous where they live. This window exists so a school is not forced into an insect calendar.
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.
6 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 reviewerSilhouette class only. Many genera exist; do not name a minnow from this card.
Declared by the reviewerNever a current bait density or feeding claim.
Declared by the reviewerThis is a silhouette observation class for forage fish, not a species identification and not a hatch.
Declared by the reviewerMany genera exist (shiners, dace, darters, shad, fry of gamefish). The useful field result is 'forage silhouette', not a named minnow.
Declared by the reviewerThis record never claims current bait presence, density, or that predatory fish are feeding on it now.
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.
Sources
Everything above rests on 3 published pages.
Attribution here is to the whole record, not to individual sentences — the carrier attaches a source set to a record and does not say which page carried which line. Naming one per claim would mean inventing a mapping nobody reviewed.
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.
bioGraphicMagazine. High-speed footage resolving how a school turns and reforms, one fish at a time. A silhouette entry is about the group, and this is the group.
Science media · external video · title read back from the publisher 2026-09-09
Carry it on
Take the group to the next step.
These send the class of animal and the water this record is documented in. They do not send a sighting, because this page does not have one — you have not told it what you saw.
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.
Keep the group on the day's record, so a later entry can be compared against what you were looking at.
Found an error?
This entry was written and drawn away from your water. If something here is wrong, say so — the report is assembled in your browser and sent only if you send it.