Bluegill
PanfishLepomis macrochirus · also called bream, brim, sunfish
The bluegill is most people's first fish, and the sunfish family it belongs to is genuinely confusing because the species hybridise freely. The solid black ear flap with no coloured margin, plus the dark dorsal blotch, is the reliable combination.
Quick facts
- Appearance
- Deep, flat, plate-shaped body, olive to blue-green with faint vertical bars, a solid black ear flap and a dark blotch at the rear base of the dorsal fin.
- Typical size
- 0.2–1 lb
- Waters
- lake, pond, river, reservoir
- Regulations
- Panfish limits are often generous or absent, but several states have introduced size limits on bluegill to protect the large males. Hybrids are common and hard to call.
How to confirm it
- Ear flap solid black with no red, orange or pale edge.
- Dark smudge at the rear base of the soft dorsal fin.
- Very small mouth — smaller than any other common sunfish.
- Long pointed pectoral fin reaching well past the eye when folded forward.
What it is confused with
One check settles each of these.
Pumpkinseed has a bright red or orange spot on the trailing edge of the ear flap and wavy blue lines on the cheek.
Green sunfish
Green sunfish has a much larger mouth, a more elongated body, and pale edging on the fins.
Why this matters beyond curiosity
- Look-alike species often carry different limits. Walleye and sauger, black and white crappie, pike and muskie, blue and channel catfish — each pair can have different sizes, seasons and daily limits in the same water.
- Check it before the fish goes in the livewell. Most of the tests on this site take seconds and are far easier on a fish you are still holding.
- If you cannot tell, release it. That is the answer that is never wrong, and it is the one a warden will not argue with.
- Regulations are set by your state or province and change annually. This site identifies fish; it does not tell you the rules. Check the current regulations for the water you are on.