freshwater
Green Sunfish
Lepomis cyanellus
Deep, compressed body with a large mouth extending beneath the eye. Coloration is typically olive-green to blue-green on the back and sides, fading to a yellowish or white belly. Distinctive blue-green wavy lines radiate across the head from the snout and gill covers.…
- Habitat
- Native to North America, inhabiting sluggish streams, ri…
- Size & weight
- Typically ranges from 4 to 7 inches (10 to 18 cm) and we…
- Diet
- Carnivorous, feeding on aquatic insects, insect larvae,…
Identified More freshwater →
Learn more about Green Sunfish in the encyclopedia →Identify your own catch.
Get a report just like this from any photo, free.
Physical characteristics
Deep, compressed body with a large mouth extending beneath the eye. Coloration is typically olive-green to blue-green on the back and sides, fading to a yellowish or white belly. Distinctive blue-green wavy lines radiate across the head from the snout and gill covers. The opercular flap (ear flap) is black with a light-colored or yellowish-white border.
Habitat & distribution
Native to North America, inhabiting sluggish streams, rivers, ponds, and lakes with abundant aquatic vegetation, submerged logs, or rocky structures. Highly adaptable and tolerant of turbid water and low oxygen levels.
Behavior
Solitary and territorial for most of the year, becoming more social during the spring spawning season. Primarily diurnal, actively foraging during daylight hours.
Diet
Carnivorous, feeding on aquatic insects, insect larvae, small crustaceans, snails, and occasionally small fish. Uses an ambush hunting strategy near structure.
Reproduction
Spawns in the spring and summer when water temperatures rise. Males clear shallow, circular depressions in the substrate near the shore to create nests and aggressively guard the eggs and fry until they hatch.
Ecological role
Acts as both a predator of small aquatic invertebrates and small fish, and as prey for larger piscivorous fish, birds, and mammals, playing a crucial role in freshwater food webs.
Similar species
Bluegill (Lepomis macrochirus) and Pumpkinseed (Lepomis gibbosus). Green sunfish can be distinguished from bluegill by their larger mouth, more elongated body shape, and blue-green facial markings.
Identification tips
Look for a large mouth extending past the middle of the eye, bright blue-green streaks on the cheeks, and a dark ear flap with a pale margin.
Interesting facts
Green sunfish readily hybridize with other sunfish species such as bluegill and largemouth bass, often resulting in offspring with unique intermediate color patterns.
Field notes
New Mexico