Appearance
Logperches are easily distinguished from most other darters by their tiger-like coloration. They also have distinctive head and snout shapes. Logperches are a pale-yellow base color, with narrow bars on the side and back. Logperches reach a maximum size of about 18 cm and a maximum age of about four years.Distribution
Mobile logperches live primarily in the Southeastern U.S. They are endemic to all river systems of the Mobile River basin in Mississippi, Alabama, Tennessee, and Georgia. They are particularly widespread in the upper Cahaba and Coosa River systems. Populations of the Mobile logperch and gulf logperch occur together at certain locations in the Alabama, Black Warrior, and upper and lower Tombigbee River systems. Studies have been conducted in the Conasauga River ; Luxapallila Creek, Mississippi; and the Neosho River in Kansas.The Mobile logperch is found in shallow water in the summer, but uses deeper reaches, or uses depths randomly, in all other seasons. Like other logperches, they inhabit clear, gravelly streams and lakes. Logperches live in mostly shallow, clear water waterways. These habitats are associated with ''Podostemum'' . Some species indicate that longitudinal position was a strong covariate with little support that ''Podostemum ''cover influenced occupancy. The greatest densities of Mobile logperch occur over gravel or sand substrates in moderate current or in lakes over sand and mud substrates.
Habitat
Mobile logperches live primarily in the Southeastern U.S. They are endemic to all river systems of the Mobile River basin in Mississippi, Alabama, Tennessee, and Georgia. They are particularly widespread in the upper Cahaba and Coosa River systems. Populations of the Mobile logperch and gulf logperch occur together at certain locations in the Alabama, Black Warrior, and upper and lower Tombigbee River systems. Studies have been conducted in the Conasauga River ; Luxapallila Creek, Mississippi; and the Neosho River in Kansas.The Mobile logperch is found in shallow water in the summer, but uses deeper reaches, or uses depths randomly, in all other seasons. Like other logperches, they inhabit clear, gravelly streams and lakes. Logperches live in mostly shallow, clear water waterways. These habitats are associated with ''Podostemum'' . Some species indicate that longitudinal position was a strong covariate with little support that ''Podostemum ''cover influenced occupancy. The greatest densities of Mobile logperch occur over gravel or sand substrates in moderate current or in lakes over sand and mud substrates.
Evolution
Juveniles eat organisms such as rotifers, copepods, and waterfleas. As they grow, they incorporate a greater variety of small aquatic creatures. They eat mostly aquatic insects , and also may eat young snails, waterfleas, leeches, and fish eggs when available. ''Percina'' show broad diversity of reproductive behavior and life history traits. Large numbers of reservoir-based individuals frequently migrate upstream into small flowing streams from late February into May to spawn . Females are thought to bury eggs in riffles or shoals of sand or gravel. Mobile logperch may live three to four years. They sometimes fall prey to piscivorous fish . These fish include lake trout, walleye, rock bass, largemouth bass, burbot, and northern pike. When they spend time in slow and shallow water, they also are eaten by fish-eating birds, such as terns and mergansers.References:
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