A major project is underway in Llanelli to clear the lakes in the coastal park of an invasive fish.
Topmouth gudgeon is a small freshwater fish from Asia. It was brought to Europe accidentally in the 1960s.
Experts say it's a highly damaging species. It carries a parasite that attacks other varieties of fish, and dominates the habitat and food supply.
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Welcome to the Newsweek Quiz - where we'll be testing your knowledge from the last seven days of news here in Wales.
Ospreys lock Lloyd Peers has joked that a change of name after marrying his wife, could mean better fortunes on the pitch.
Much of Wales is bathed in warm sunshine at the moment, but be warned! It is about to come to an abrupt end overnight!