‘They ate the shrimp, they even ate the crab’: Thai fishers count the cost of a voracious invader

The Guardian UK Sunday 05 July 2026, 04:00 UTC By Rebecca Ratcliffe 1 min read

Key Points

Huge numbers of blackchin tilapia, a fish native to west Africa, are wreaking havoc among Thailand’s river ecosystems. Experts – and some chefs – are seeking sustainable solutionsThe menu at Kor-Tae seafood restaurant, in Thailand’s Samut Prakan province, is filled with Thai classics – from tom yum talay, a fragrant hot and sour soup, to spicy larb salads. But the restaurant’s chef is also experimenting with a more controversial ingredient: blackchin tilapia.

Huge numbers of blackchin tilapia, a fish native to west Africa, are wreaking havoc among Thailand’s river ecosystems. Experts – and some chefs – are seeking sustainable solutions

The menu at Kor-Tae seafood restaurant, in Thailand’s Samut Prakan province, is filled with Thai classics – from tom yum talay, a fragrant hot and sour soup, to spicy larb salads. But the restaurant’s chef is also experimenting with a more controversial ingredient: blackchin tilapia.

“People are hesitant, but once they try it – [they say] it’s delicious,” says owner Adisorn Jamsuksaward, who has been offering the non-native fish free of charge to friends who request it.

Thai (ORG) west Africa (LOCATION) Thailand (LOCATION) Kor-Tae (ORG) Samut Prakan (PERSON) tom (PERSON) Adisorn Jamsuksaward (PERSON)

Originally published by The Guardian UK Read original →

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