Monster Goldfish Invade Lake Tahoe
Invasive species could damage the ecosystem
By Neal Colgrass, Newser Staff
Posted Feb 22, 2013 3:55 PM CST
The new owner of a massive goldfish.   (YouTube)

(Newser) – Planning a vacay to Lake Tahoe? You may well encounter goldfish that are 1.5 feet long and weigh more than 4 pounds, Scientific American reports. Researchers trolling for invasive species encountered the massive goldfish and say pet owners may have dumped them. That act of good will, however, could damage the lake's ecosystem when the goldfish eat native species and excrete a nutrient that muddies the water by causing algal blooms.

So-called fish dumping is nothing new: "Globally, the aquarium trade has contributed a third of the world's worst aquatic and invasive species," says the lead author of a report on California's aquarium trade. Owners often discard them because the fish are too big and aggressive, he adds. As for the monster goldfish, only 15 have been found so far, swimming "in a nice corner," says a scientist. "It's an indication that they were schooling and spawning."

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Showing 3 of 39 comments
ppacimr9ball
Feb 25, 2013 8:47 AM CST
when gold fish get big they change colors, this dont look like a gold fish, looks more like a perch
rosarians
Feb 25, 2013 7:13 AM CST
Goldfish are carp that the Japanese bred to be that color. Their offspring will eventually revert to the gray brown carp. By the way, how could you count all the fish in Lake Tahoe without draining it. Answer, dump 100 tagged fish into the lake. Start fishing until you caught 100 fish. The percent of tagged fish to untagged fish will give you the answer.
right2dave
Feb 25, 2013 6:42 AM CST
Boil in a pot of crab boil and dinner for two.