Grass Carp

Body Type & Identification: Large, robust carp with a terminal mouth (not downturned like Common Carp) and no barbels. Olive-green to silver with large scales. An Asian species introduced to the US primarily for aquatic vegetation control — widely stocked in ponds, lakes, and canals as a biological weed control agent. Can reach 80+ lbs. Triploid (sterile) fish are typically stocked.

Preferred Water Temperature: 68°F–82°F. A warm-water species adapted to slow rivers and lakes. Most actively feeding in summer. A strict herbivore — feeds exclusively on aquatic vegetation. Does not compete with sport fish for food but dramatically alters aquatic ecosystems by removing vegetation.

Habitat: Ponds, lakes, canals, and slow rivers throughout the US where stocked. Found in many irrigation canals of the West and farm ponds throughout the South and Midwest. Escaped populations exist in the Mississippi drainage. Often found in large schools near aquatic vegetation they are consuming.

Best Lures: Fly fishing with plant-based fly patterns or small nymph imitations near vegetation is effective. Rarely taken on conventional lures.

Best Baits: Fresh corn is the top bait. Cherry tomatoes on a hair rig produce results. Bread balls work well. Watermelon pieces are surprisingly effective. Vegetation-based baits like fresh grass clippings are used in some fisheries. Hair rig presentations (European carp technique) with floating or semi-buoyant plant-based baits are most effective.

Top 5 Destinations: Ponds and canals throughout the South where stocked — Arkansas River canals, Florida irrigation canals, Texas farm ponds.