Just two species of the freshwater fish still exist in the ancient waters of Lake Lanao in the Philippines after predatory fish were accidentally introduced
It was a celebrated clan: a group of 17 carp species found nowhere else in the world except for an ancient freshwater lake in the Philippines. One so fat it could be fried without oil, another sought after for its delectable egg-filled ovaries, a third known, oddly enough, for its endearing overbite.
Yet in recent years 15 of them have been declared extinct, victims of mismanaged fish farming efforts that accidentally introduced predatory fish into their home. In all likelihood, these invaders will continue to menace the native carp until none of them are left.
(SOURCE) https://www.theguardian.com/environment/2022/jun/29/15-carp-species-extinct-philippines-aoe