Green Sunfish

Lake shore at sunset

Lepomis Cyanellus

Green Sunfish


The Green Sunfish (Lepomis cyanellus) is a small freshwater fish species belonging to the sunfish family (Centrarchidae). With its vibrant coloration and feisty demeanor, it is a popular species among anglers and a common inhabitant of North American water bodies.

Physical Characteristics

Green Sunfish are characterized by their deep, laterally compressed bodies and their distinctive greenish-blue coloration on the head and upper body, fading to a pale yellow or cream on the belly. Dark vertical bars on their sides and a red or orange spot at the base of their tail fin are common markings. They have a relatively small mouth and a sturdy build, with adult sizes typically ranging from 4 to 7 inches in length.


Native to North America, Green Sunfish can be found in a variety of aquatic environments, including lakes, ponds, rivers, and streams. They are known for their adaptability and can thrive in both slow-moving and stagnant waters, often occupying areas with abundant cover such as submerged vegetation, rocks, and debris.

Habitat and Behavior

Green Sunfish exhibit a territorial and aggressive behavior, often staking out their own territories within their preferred habitat. They are opportunistic predators, feeding on a wide range of aquatic invertebrates, small fish, and even some plant material. Their feeding habits make them an important link in the aquatic food chain.


During the spring and early summer, Green Sunfish engage in reproductive activities. They construct saucer-shaped nests on the lake or river bottom, typically near submerged vegetation or other structures. The male guards the nest and protects the eggs until they hatch. Juvenile Green Sunfish grow quickly and can reach sexual maturity within their first year of life.

Ecological Role

As both predators and prey, Green Sunfish play a significant role in the ecosystem. They help control populations of small aquatic organisms, contributing to the overall balance of the food web. Additionally, they serve as a food source for larger predators, such as bass and larger sunfish species.


Green Sunfish are not considered endangered or threatened. However, in some cases, they have been introduced outside their native range, potentially disrupting local ecosystems. Invasive populations can outcompete native species and upset the natural balance of aquatic communities. Preventing the accidental introduction of Green Sunfish and adhering to responsible fishing practices are important steps in maintaining healthy aquatic ecosystems.

← All Species
Green Sunfish