SESKStuff Everyone Should Know
SESK: Stuff Everyone Should Know · sesk.info/fish-bluegill-flap

What marks a bluegill?

A dark blue-black flap on the gill cover.

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  1. A dark flap on the gill cover ✔
  2. A forked tail with spots
  3. Four whiskers on each side

Why: The ear flap is the best clue. Minnesota DNR describes it as a dark blue tab at the rear edge of the gill cover.

Huh, didn't know that: Male bluegills hollow out a bowl-shaped nest in sand or gravel.

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What do you get when you cross a banker with a fish? A loan shark!
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References

Answer: A dark flap on the gill cover. The ear flap is the best clue. Minnesota DNR describes it as a dark blue tab at the rear edge of the gill cover.

  1. Bluegill (Minnesota DNR) dnr.state.mn.us/minnaqua/speciesprofile/bluegill.html
    the dark blue tab or “ear flap” at the rear edge of the gill cover.
    Checked 2026-10-10.

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