Sea Trout fishing

Sea trout are the same species as the brown trout you find holding in a chalk stream all year, Salmo trutta, but with a very different life story. Rather than staying in fresh water, sea trout drop down to the estuary and sea as juveniles, feed and grow out there, and then run back up rivers like the Test, Itchen, and Frome to spawn, arriving as considerably bigger, silvered fish than anything living permanently in the same stretch of water. Catching one is a genuinely different experience from ordinary chalk stream trout fishing, even though you are fishing the same river, sometimes the same pool, that produces wild browns by day.

The sea trout run on these rivers is a summer event, broadly from around June through into September, though the exact timing shifts from year to year with rainfall and river levels: a good spate often brings a fresh batch of fish up from the estuary, while a low, clear summer can leave a beat quiet until conditions change. Because sea trout run at night far more readily than by day, particularly once they have been in fresh water a while and grown wary, the best fishing tends to happen after dark, which makes this one of the more specialised and less crowded types of fishing available on these rivers.

Night fishing for sea trout asks for a different approach to daytime dry fly work. Most anglers fish traditional wet flies or small lures across and downstream through likely holding water, working by feel and familiarity with the pool rather than by sight. Warm, still, slightly overcast nights are traditionally rated highly, and a change in the weather, particularly a bit of cloud cover or thundery pressure after a settled spell, can trigger a burst of activity. It is not fishing for everyone: it means being on the river well after dark, learning a beat by memory in daylight first, and being comfortable wading and casting without being able to see the water clearly.

FishingBeats lists 62 beats offering sea trout fishing, across the same three rivers as the salmon listings: the Test, the Itchen, and the Frome. As with salmon, this is a smaller and more specialised fishery than the trout and grayling on offer across the wider chalk stream network, and beats with a strong reputation for sea trout can be in demand during the height of the summer run.

If you are new to sea trout fishing, it is worth walking the beat in daylight before your first night session, and talking to the fishery about which pools and glides tend to hold fish and what tackle and fly sizes work best locally. Check the specific season dates and any catch and release rules for the beat, as these can differ from the daytime trout rules on the same water.