How to Identify Spotted Sunfish

To identify Spotted Sunfish (Lepomis punctatus), look at these key features.

Physical Characteristics

Body shape

compressed

Coloration

Olive-green to brownish dorsally, fading to a lighter olive or yellowish-white ventrally. Sides are covered with numerous small, dark, often reddish-brown to black spots, which are particularly prominent on the scales. The opercular flap (ear flap) is typically dark with a pale margin, but lacks the red or orange spot often seen in other sunfish. Fins are generally dusky.

Scale type

ctenoid

Mouth position

terminal

Distinctive features

Numerous small, dark spots on the body and head., Dark opercular flap with a pale margin., Relatively small mouth, not extending past the front of the eye., Pectoral fins are short and rounded.

Dorsal fin

Single dorsal fin with 10-11 spines and 10-12 soft rays. The spiny and soft-rayed portions are broadly connected.

Tail fin

Slightly emarginate to rounded caudal fin.

Pectoral fin

Short and rounded, typically with 13-14 rays.

Distinctive fins

Anal fin has 3 spines and 9-11 soft rays. Pelvic fins are thoracic.

Identification Tips

1. 1

   Body Spots

   Look for the numerous small, dark spots scattered across the body and head, which are the most distinguishing feature.

2. 2

   Opercular Flap

   Observe the opercular flap (ear flap); it is dark with a pale, often whitish or yellowish, margin, and lacks any prominent red or orange spot.

3. 3

   Mouth Size

   Note the relatively small mouth, which does not extend beyond the anterior margin of the eye.

4. 4

   Pectoral Fins

   The pectoral fins are short and rounded, not long and pointed like some other sunfish species.

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