Complete Freshwater Flounder care guide. Flat bottom-dweller needing sand substrate and brackish water. Ambush predator requiring live/frozen foods. Fascinating oddball.. Freshwater flounders are unique fish species adapted to live in freshwater, making them distinct from other flounder species. They belong to the Achiridae family and fall under numerous genera. Commonly, they inhabit the freshwater regions of South America, thriving in sandy or muddy substrates. With over 200 flatfish species under the Achiridae family, confusing freshwater flounders with.
Freshwater Flounder Price The price of freshwater flounder varies depending on the size, quality, and availability. Generally, you can expect to pay anywhere from $1.50 to $4 per pound for whole flounder or fillets. Prices are usually higher in coastal areas where the fish is more abundant and lower inland where it may be harder to find.. The Freshwater Flounder is native to the Northern Gulf of Mexico to northern Argentina, and Florida. Its name is misleading as this is in fact a fish that thrives in brackish water. Freshwater Flounders are very easy to care for and can live for up to five years if provided with optimal tank conditions. This article contains all the information you need before adding Freshwater Flounder to.