Killifish (Order: Cyprinodontiformes) have wide environmental tolerances, including salinity. The Gulf killifish Fundulus grandis is of particular interest as a live baitfish for marine sportfishing. For this reason, production protocols for Gulf killifish have been evaluated and modified since the late 1970s.Gulf killifish are desirable to recreational anglers and show economic potential if producers can meet demand by providing a constant supply at a market size of 6 cm or larger. However, they have not been widely adopted by producers, due in part to limited understanding of commercial-scale grow-out techniques to market size. The broad salinity tolerance of this species allows for unique rearing capabilities in low-salinity or freshwater environments such as inland ponds.
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