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Invasive Species

Did you know it is illegal to transport an invasive species alive? Please help us track invasive fish by killing and reporting your catch at

Flathead Catfish

Flathead catfish are most easily recognized by their broad, flat head, brown mottled coloration and lower jaw which sticks out further than the upper.

Blue Catfish

The invasive blue catfish (on top), and a channel catfish (lower) can be differentiated by spreading out the anal fin and looking for a straight or lobed appearance.

Northern Snakehead (Mature)

Northern snakehead are identified by a long dorsal (back) fin and anal fin, a rounded tail, and a large mouth reaching beyond the eye with many, sharp teeth. They are often confused with native bowfin. Visit for more identification information.

Northern Snakehead (Juvenile)

Shellfish Aquaculture — Inland Bays

Anglers and boaters should be aware that shellfish aquaculture leases are established in Delaware’s Inland Bays. Leased areas may contain submerged or floating aquaculture gear. Although anglers may fish in these areas, it is unlawful to anchor on a leased area or tie a vessel to any lease markers or gear. It is also unlawful to harvest any cultured or wild bivalve shellfish from the lease sites or associated navigation corridors. Shellfish aquaculture leases are presently located in the areas indicated on Fishing & Clamming Maps; however, other areas may be leased in the future. For an interactive map of the leased areas, or more information on the program, please refer to