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The bluegill bully is the smallest of the Eleotrids, commonly reaching only 60–70 mm (2.4–2.8 in). [2] It is named for the bright blue edge to the operculum or gill cover, which is present in both sexes. It eats aquatic invertebrates and has an upturned mouth, allowing them to pick invertebrates off the stones above them. [2]
Bluegill can theoretically hybridize with all other species in the genus Lepomis, though the most common hybrid is the greengill. [32] The hybrid fish are aggressive and have larger mouths than their bluegill parent. These fish also grow faster than other small mouth fish due to its bigger mouth.
The adult fish are between 20 and 24 cm (7.9 and 9.4 in) in length. Max length is 43.2 cm (17.0 in), compared to a maximum of about 40 cm (16 in) for the bluegill. Redear sunfish on average reach about 0.45 kg (0.99 lb), also larger than the average bluegill.
Lepomis or true sunfish is a genus of North American freshwater fish from the family Centrarchidae in the order Centrarchiformes. The generic name Lepomis derives from the Greek λεπίς ("scale") and πῶμα ("cover", "plug", "operculum"). The genus' most recognizable species is perhaps the bluegill.
The pumpkinseed x bluegill sunfish [1] (Lepomis gibbosus x macrochirus), sometimes colloquially referred to as hybrid sunfish or pumpkingill, [citation needed] is a hybrid between a pumpkinseed (Lepomis gibbosus) and a bluegill (Lepomis macrochirus). [2] They are sometimes found in lakes and ponds where both parent species are present. [2]
The greengill sunfish (Lepomis macrochirus × cyanellus) is sometimes referred to as hybrid sunfish or bluegill x green sunfish hybrid. It is a hybrid between a bluegill (Lepomis macrochirus) and green sunfish (Lepomis cyanellus). [1] They can sometimes be found in ponds, lakes, or streams where there is both bluegill and green sunfish.
Freshwater fish are fish species that spend some or all of their lives in bodies of fresh water such as rivers, lakes, ponds and inland wetlands, where the salinity is less than 1.05%. These environments differ from marine habitats in many ways, especially the difference in levels of osmolarity .
Needlefish (family Belonidae) or long toms [2] are piscivorous fishes primarily associated with very shallow marine habitats or the surface of the open sea. Some genera include species found in marine, brackish, and freshwater environments (e.g., Strongylura), while a few genera are confined to freshwater rivers and streams, including Belonion, Potamorrhaphis, and Xenentodon. [3]