Common Gudgeon
Gobio gobio
Common gudgeon (Gobio gobio) is a small cyprinid of clear, cool European rivers and streams, with a preference for gravelly or sandy bottoms. It feeds near the substrate on benthic invertebrates and is usually encountered as a modest-sized shoal fish rather than a targeted sport species.

Identification points
- Small, elongated cyprinid with a relatively large head and subterminal mouth with barbels
- Dark blotches along the back and upper sides, often forming a mottled pattern
- Fins usually clear to slightly tinted, with a slim body and squared tail
Habitat
Shallow to moderately deep flowing freshwaters with clean gravel, sand, or mixed substrates, often in lowland rivers, clear canals, and occasionally lakes with inflowing streams; it favors runs and riffle edges near the bottom.
Bait notes
Small natural baits work best: maggots, pinkies, worms, bread flake, and tiny pieces of worm or caster. Small nymphs and micro lures can take fish where legal, but it is rarely a primary lure target.
Behavior
A bottom-oriented schooling fish that forages by day on insect larvae, small crustaceans, and other benthic invertebrates. It stays close to the substrate and is most active where current delivers food along the bed.
Caution
No notable consumption hazard is commonly associated with this small freshwater species, but local water quality and angling regulations should be checked. Handle carefully if using very small hooks to avoid injury to the fish.
Fishing notes
Fish light tackle with small hooks and a fine float or light ledger close to the bottom. Present bait in current seams, along gravel bars, and near deeper glides; avoid bulky rigs that spook small, cautious fish.