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The Texas cichlid (Herichthys cyanoguttatus), also known as the Rio Grande cichlid, is a freshwater fish of the cichlid family, and the only cichlid species that is native to the United States. It is found in the lower Rio Grande drainage in Texas near Brownsville and northeastern Mexico .
Herichthys is a genus of cichlid fishes native to North and Central America.Most are endemic to Mexico, but H. cyanoguttatus is also found in southern Texas (United States), and has been introduced to central Texas and Florida.
The invasive Rio Grande cichlid (Herichthys cyanoguttatus) has had negative effects on bluegill in New Orleans. The cichlid was aggressive towards the bluegill and took over some nesting sites. [18] Several species of cichlid have become established in the Southeastern United States, particularly in the Everglades. [20]
While the redspotted sunfish has been shown to compete with other sunfish and some invasive species, like the Rio Grande cichlid in Louisiana, this competition is thought to have little effect in most cases due to the generalist diet of Lepomis miniatus. [11]
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The Richard K. Yancey Wildlife Management Area, formerly the Red River/Three Rivers Wildlife Management Area, is a 70,872-acre (28,681 ha) [1] tract of protected area in lower Concordia Parish, Louisiana. The area is owned by the Louisiana Department of Wildlife and Fisheries and the U.S. Army Corps of Engineers (USACOE).
Louisiana is divided into areas called ecoregions, West Gulf Coast Plain (WGCP) with 370,861 acres, East Gulf Coast Plain (EGCP) with 198,377 acres, Mississippi Alluvial Valley - North (MAVN) with 128,736 acres, and the Mississippi Alluvial Valley - South (MAVS) with 257,999 acres.
Louisiana's ecology is in a land area of 51,840 square miles (134,264 km 2); the state is 379 miles (610 km) long and 130 miles (231 km) wide and is located between latitude: 28° 56′ N to 33° 01′ N, and longitude: 88° 49′ W to 94° 03′ W, with a humid subtropical climate (Köppen climate classification Cfa).