Images projected on to the brown trout will begin the On the Fly Mataura River Day festival this weekend.
The images, on show tonight and tomorrow night from 9pm to 11.30pm, are expected to draw attention to the festival.
The festival will be held at the River Terrace, north east of the bridge, between 3pm and 6pm on Saturday.
Gore District Council events and promotions co-ordinator Emma Carle said the event would host a line-up that would teach the community about fishing.
“It’s the opportunity to have a go, with so many different stalls available,” Ms Carle said.
Fish & Game will have a tank of baby trout and Hokonui Runanga will bring native fish and eels.
Casting for Recovery, an organisation that arranges retreats for women who had breast cancer, will also be on hand.
The Menzies Fly Fish Club and anglers from the region will teach people how to cast lines.
There will be trout and filleting demonstrations, and the Southland Fly Fishing Club will host a fly tying demonstration.
“Whether you know a little or a lot about fly fishing, there will be something for everybody to learn,” Ms Carle said.
There will also be face painting, yoga, games, rock painting, market stalls and different cuisine available to buy as well.
Dunedin bands Dubious Groove and Loose & Colourful will perform throughout the afternoon.
Ms Carle said the festival would take place rain or shine, so bring an umbrella and a sunhat.
Hosting the festival in a central location provided the opportunity to walk to the event, she said.
“If people need to drive, park in one of the grass areas near Walnut Grove and walk down to the festival.”
Ms Carle was excited about hosting a festival dedicated to fishing in the area for the first time.
“It’s a real community event, celebrating all the area has to offer in fly fishing – it will be a great day out.”
She hoped the festival would become an annual event.