Goldfish
Carassius auratus
Goldfish (Carassius auratus) is a domesticated freshwater carp that also occurs as feral populations worldwide, often from aquarium releases. In the wild it thrives in calm, warm, weedy waters and can become invasive, competing with native fish.
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Identification points
- Deep-bodied, rounded carp shape with a small terminal mouth
- Typically orange, gold, or mottled red-white; feral fish may be bronze or olive
- Long dorsal fin and a single deeply forked tail in most forms
Habitat
Still or slow-moving freshwater such as ponds, lakes, canals, reservoirs, floodplain wetlands, and quiet backwaters with soft bottoms, aquatic vegetation, and warm water.
Bait notes
Use small hooks with worms, bread, corn, dough balls, or maggots; tiny soft plastics and microjigs can also work on feral fish. They are not a common sport target, so catch rates are usually incidental rather than a dedicated fishery.
Behavior
Omnivorous and opportunistic, feeding by rooting along the bottom for algae, detritus, insects, crustaceans, plant matter, and seeds. Feral fish are most active in warm water and often school in shallow, vegetated areas.
Caution
Usually a low-risk table fish, but wild or feral goldfish should not be eaten from polluted waters; check local advisories. Release carefully where goldfish are invasive or where collecting feral fish is restricted.
Fishing notes
Fish very light tackle and small baits near the bottom or around weeds in calm water. Slow retrieves, short drifts, or float fishing can be effective; avoid heavy line and large hooks, which reduce bites from their small mouth.