|Mullets are elongate cylindrical fishes with somewhat flattened heads and small mouths. Most are marine but can tolerate a wide variety of salinities. Some have been known to swim far up rivers and can spend and a considerable amount of time in freshwater. They occur in schools and eat detritus and plant material. Mullet are known for leaping through the air to avoid predators and possibly to "breath" more oxygen, especially in low-oxygen waters. They are important as food in other countries and in the U.S. east of the Mississippi River but not so popular as a food fish in Texas. They are also important in the bait industry and are known to be good flounder bait. Mullet roe is considered a delicacy in many cultures and is marketed as "Bottarga", "Karisumi", and several other names.