Bluegill vs Redear sunfish
How to tell them apart, and what follows from getting it right.
Why they get confused
Both are deep-bodied sunfish with a dark ear flap, both are stocked into the same southern and midwestern ponds, and they nest in the same shallow colonies within weeks of each other. Anglers call redear a shellcracker and bluegill a bream and then use both names loosely for whatever comes up. The two are stocked together deliberately in many managed fisheries, so a mixed catch is normal rather than exceptional.
Bluegill
Lepomis macrochirus — Centrarchidae
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Redear sunfish
Lepomis microlophus — Centrarchidae
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The differences
Each difference is marked with how far it can be trusted on its own. A single diagnostic character settles the identification; suggestive ones only narrow it.
| Character | Bluegill | Redear sunfish | Reliability |
|---|---|---|---|
| The trailing edge of the ear flapIdentification | Black to the very edge, with no margin of another colour on it at any age or sex. | A clean bright red or orange band along the rear margin of the black flap, strongest in males and duller but present in females. | Diagnostic on its own |
| Blotch at the rear of the soft dorsalIdentification | Present in most fish — a dark smudge at the back of the soft dorsal fin. | Absent. Two checks that agree — a red-edged flap and a clean dorsal — are much stronger than either alone. | Supporting — use with others |
| Pectoral fin shapeIdentification | Pectorals shorter and more rounded at the tip. | Pectorals longer and distinctly pointed, reaching well past the eye when folded forward — a shape that goes with hovering over the bottom to feed. | Supporting — use with others |
| Where in the water column they feedFeeding | Takes insects, zooplankton and small invertebrates through the water column and off the surface as readily as off the bottom. | Strongly bottom-oriented, using heavy pharyngeal teeth to crush snails and small mussels — the reason for the shellcracker name and the reason baits fished hard on the bottom sort the two. | Supporting — use with others |
| When and where they nestSpawning | Nests colonially in shallow water in late spring and through summer, often repeatedly through a long season. | Nests colonially too, but generally slightly earlier and in slightly deeper water than bluegill in the same lake. | Suggestive only — varies |
| The size you are likely to be holdingSize | Most fish 80–200 g; a good one 300–450 g. | Typically larger, 200–500 g, with good fish approaching or passing a kilo. A notably heavy sunfish is more often a redear. | Suggestive only — varies |
Why it matters
In fisheries managed for panfish the two are counted separately and may carry different bag or size limits, so the flap check is what a creel rule actually means. Redear is also stocked outside its native south-eastern range specifically because its snail- and mussel-crushing habit acts on invasive gastropods, and where it is non-native that stocking is a management decision rather than an invitation to move fish around. The practical fishing consequence is different too: a bait suspended in midwater sorts strongly towards bluegill, and one fished hard on the bottom towards redear, so knowing which you have caught tells you what to do next.
The full records
This page compares two species. Each of them has a complete record covering biology, behaviour, handling and the evidence behind all of it.
More about bluegill
Where it lives, how it is caught, and what else it is confused with.
Similar and related fish
Black crappieBoth are sunfish of the Centrarchidae, and the difference that matters is diet: crappie eat small fish and take jigs and minnows, bluegill pick invertebrates and do not.
Largemouth bassThe relationship that governs pond management in North America. Where bass are scarce, bluegill reproduce until growth stops rather than until numbers do, producing waters full of small fish.
PumpkinseedSeparated by the orange-red margin on the gill flap, and the two hybridise where they occur together.
What these connections rest on (3)
Scientific evidence — 3 connections
Supported by peer-reviewed research or fisheries science. The sources are listed and can be checked.
Black crappie
A comparison resting on shared family and differing feeding ecology, naming both binomials.
- FishBase: a global information system on fishes — Froese, R. and D. Pauly, eds. — FishBase Consortium (Scientific institute)Relied on for: That Pomoxis nigromaculatus and Lepomis macrochirus are both Centrarchidae, with the former taking a substantially piscivorous diet.States this directlyPassage read and verified
Largemouth bass
A predator-prey claim naming the predator binomial, and the basis of the stunting argument on both records.
- FishBase: a global information system on fishes — Froese, R. and D. Pauly, eds. — FishBase Consortium (Scientific institute)Relied on for: That Micropterus salmoides is an opportunistic ambush predator taking fish, occupying the same warm weedy still water as Lepomis macrochirus.States this directlyPassage read and verified
Pumpkinseed
An identification comparison naming both binomials: Lepomis gibbosus and Lepomis macrochirus.
- FishBase: a global information system on fishes — Froese, R. and D. Pauly, eds. — FishBase Consortium (Scientific institute)Relied on for: Morphological and distributional data for Lepomis gibbosus and for Lepomis macrochirus.States this directlyPassage read and verified
- The IUCN Red List of Threatened Species — International Union for Conservation of Nature (Conservation authority)Relied on for: Separate assessments treating Lepomis gibbosus and Lepomis macrochirus as distinct species.States this directlyCitation checked — the work exists and is described correctly
How it is caught
- Float fishingA small bait under a float at a set depth is the method bluegill are most fished with, matching a small-mouthed fish that feeds on invertebrates in the column around cover.
- Ice fishingBluegill remain active under ice and are among the principal winter panfish across their range, taken on very small baits at a precisely held depth.
What these connections rest on (2)
Practitioner consensus — 2 connections
Widely and independently recommended by experienced anglers and specialist sources. This is real angling knowledge, not proof: controlled evidence for it is limited, and FishingHQ records it as convention rather than as a demonstrated effect.
Float fishing
Established angling practice for this species, recorded as convention. The note states the property of the animal or its water that makes the method the answer.
- IGFA International Angling Rules and World Record Requirements — International Game Fish Association (Angling or fisheries organisation)Relied on for: Recognition of the species as an established sport fish and the angling methods and tackle classes conventionally used for it.States this directlyPassage read and verified
- General angling website restatements of established technique — Various (Credible secondary source)Relied on for: Widely restated practice connecting this species and method.Background and mechanism onlyCitation checked — the work exists and is described correctly
Ice fishing
Established angling practice for this species, recorded as convention. The note states the property of the animal or its water that makes the method the answer.
- IGFA International Angling Rules and World Record Requirements — International Game Fish Association (Angling or fisheries organisation)Relied on for: Recognition of the species as an established sport fish and the angling methods and tackle classes conventionally used for it.States this directlyPassage read and verified
- General angling website restatements of established technique — Various (Credible secondary source)Relied on for: Widely restated practice connecting this species and method.Background and mechanism onlyCitation checked — the work exists and is described correctly
Where it lives
What these connections rest on (1)
Scientific evidence — 1 connection
Supported by peer-reviewed research or fisheries science. The sources are listed and can be checked.
Lowland stillwaters
A habitat claim held to a scientific standard.
- FishBase: a global information system on fishes — Froese, R. and D. Pauly, eds. — FishBase Consortium (Scientific institute)Relied on for: That Lepomis macrochirus occupies fresh and brackish water and is associated with vegetation in warm still habitats.States this directlyPassage read and verified
Reviewed 2026-08-15. FishingHQ does not state what any rule is or where any rule applies. Where this page says the two species are managed differently, that is a reason to check the authority for the water you are on — not a statement of what it requires.