Skip to content
Catholic Online Logo

By Catholic Online (NEWS CONSORTIUM)

2/22/2013 (3 years ago)

Catholic Online (www.catholic.org)

Monster fish raise concern among scientists as goldfish are invasive species

Gigantic goldfish - something out of an absurd cartoon, have been found spawning in Lake Tahoe. Scientists trawling the lake for invasive fish species scooped up goldfish nearly a foot and-a-half long and weighing in at 4.2 pounds. There is reason for concern, as goldfish - regular or jumbo-sized are an invasive species that could interfere with Lake Tahoe's ecosystem.

It's not yet known whether the giant fish were introduced as fully grown adults, or while they were still small. Even a small creature can have a big impact, if there are enough of them.

It's not yet known whether the giant fish were introduced as fully grown adults, or while they were still small. Even a small creature can have a big impact, if there are enough of them.

Highlights

By Catholic Online (NEWS CONSORTIUM)

Catholic Online (www.catholic.org)

2/22/2013 (3 years ago)

Published in Green

Keywords: Gold fish, Lake Tahoe, aquarium dumpers, invasive species


LOS ANGELES, CA (Catholic Online) - "During these surveys, we've found a nice corner where there's about 15 other goldfish," environmental scientist Sudeep Chandra of the University of Nevada says. "It's an indication that they were schooling and spawning."

The fish were probably dumped by aquarium owners. It's not yet known whether the giant fish were introduced as fully grown adults, or while they were still small. Even a small creature can have a big impact, if there are enough of them.

"The invasion is resulting in the consumption of native species," Chandra said. Scientists have noted that the goldfish are just one of several species of invasive warm-water fishes in Lake Tahoe. These types of fish excrete nutrients that cause algal blooms, which threaten to muddy Tahoe's clear waters.

Aquarium dumping has become a common practice in the United States and elsewhere, and it's taking a toll on native wildlife. A recent report on California's aquarium trade found that fish owners and importers are introducing hardy, nonnative aquatic species to California waters.
 
Scientists know that the practice of aquarium dumping is occurring because these species could not have ended up in these waters naturally. Between 20 and 69 percent of fish keepers surveyed in Texas admitted to dumping, according to Williams.

Other ways that invasive species find their way into natural ecosystems include aquaculture, live seafood, live bait, and fishing and recreation vessels. More than 11 million non-native marine organisms representing at least 102 species arrive at ports in San Francisco and Los Angeles alone.

The worst invaders include tropical fish, seaweed and snails. An example of one of the worst and most costly invaders was deadly type of seaweed known as Caulerpa, a type of algae that produces toxic compounds that kill off fish. Caulerpa was eradicated in 2000, at great expense from lagoons in Southern California.

Aquarium owners should be more careful when disposing of unwanted fish and other animals, Williams cautioned. "It's pretty simple: Don't dump your fish," she said.

Scientists suggest calling the pet shop that sold the fish or your state department of fish and wildlife. While euthanasia is another option, but simply flushing fish down the toilet can be problematic - for the fish and for your plumbing.

---


Pope Francis: end world hunger through 'Prayer and Action'


Copyright 2016 - Distributed by THE CALIFORNIA NETWORK

Pope Francis Prayer Intentions for May 2016
Universal:
Respect for Women: That in every country of the world, women may be honored and respected and that their essential contribution to society may be highly esteemed.
Evangelization: Holy Rosary: That families, communities, and groups may pray the Holy Rosary for evangelization and peace.



Comments


More Green

The Eastern U.S. rides atop a horrifying geologic secret. Are you sure you want to know? Watch

Image of The Eastern U.S. could have a major quake of its own, even larger than those that strike the Western U.S.

By Marshall Connolly (CALIFORNIA NETWORK)

Scientists have a new explanation for why mysterious quakes strike the Eastern U.S. when no fault lines are present. The crust of the earth is falling away beneath your feet. LOS ANGELES, CA (California Network) - Contrary to popular belief, Californians don't have a ... continue reading


Skinned alive and left to rot: 'I have no sympathy' (WARNING: GRAPHIC IMAGES) Watch

Image of Animals are inhumanely treated then killed in the name of fashion (TL McCormick).

By Kenya Sinclair (CALIFORNIA NETWORK)

Soft, cuddly, adorable little animals are slaughtered by the thousands in the name of commerce. One Russian fur farmer even admitted she felt satisfaction as she skinned some animals alive or injected them with lethal, but inhumane, drugs that slowly suffocate the ... continue reading


Thoughtcrime or free speech? Oil companies face prosecution for climate change denial, but should they? Watch

Image of Foolish to disbelieve in global warming? Perhaps. 

Criminal? No.

By Marshall Connolly (CALIFORNIA NETWORK)

At what point does it become criminal to promote an idea? Can any idea actually be off limits? These are questions that must be considered as the U.S. government begins a literal witch-hunt against climate change deniers and their corporate sponsors. LOS ANGELES, CA ... continue reading


'We see it:' The realities of global warming are finally accepted around the world Watch

Image of The Paris climate agreement saw Sen. Jeff Merkley state global warming is one of the greatest challenges of our generation (AFP).

By Kenya Sinclair (CALIFORNIA NETWORK)

With more and more nations agreeing that climate change is not only real, but also dangerous, more world leaders are making a move to save the planet. LOS ANGELES, CA (Catholic Online) - Senator Jeff Merkley took the Senate floor last week to say global warming is one ... continue reading


Volcanoes erupting everywhere! Is this a sign? Watch

Image of Popocatepetl erupts in Mexico. Prominent volcanoes in Russia and North Korea are also erupting.

By Marshall Connolly (CALIFORNIA NETWORK)

Thirty-eight volcanoes are erupting right now. Earthquakes are making the news. Is something supernatural about to occur? LOS ANGELES, CA (Catholic Online) - "Take care that no one deceives you," Jesus admonished his disciples in the book of Matthew. The Disciples were ... continue reading


Major quakes predicted - As massive quakes strike the Ring of Fire, North America remains eerily quiet... Watch

Image of North America is overdue for a major quake, but when and where it will strike is impossible to predict.

By Marshall Connolly (CALIFORNIA NETWORK)

Both a psychic and a scientist have predicted the current spate of quakes which have shook Asia, the South Pacific, and South America, and their predictions are on record. The eerie occurrence has many asking if North America is next. LOS ANGELES, CA (California ... continue reading


Scientists alarmed as massive ice sheet begins rapid melting Watch

Image of Greenland's ice sheet has begun melting early, alarming scientists.

By Marshall Connolly (CALIFORNIA NETWORK)

Scientists are in shock as a massive Greenland ice sheet has started melting far sooner than expected and in great volume. The data is so surprising, the researchers initially believed it to be an error. LOS ANGELES, CA (California Network) - On April 11, sensors that ... continue reading


Maybe this is why you're sick? Watch

Image of Global warming isn't just heating the planet, it's making people sick.

By Marshall Connolly (CALIFORNIA NETWORK)

Anthropocentric global warming is going to make you sick, according to a new federal report. The 332-page report was released Monday and it predicts a host of consequences from global warming that will begin, or have already begin to affect the country. LOS ANGELES, CA ... continue reading


Arctic ice continues to decline as global warming accelerates Watch

Image of Sea ice will begin melting and will reach its annual low point sometime in September. If the present is any indicator, we will see less ice in the Arctic this September than at any time in modern history.

By Marshall Connolly (CALIFORNIA NETWORK)

The Arctic is melting and it's happening faster than anticipated. So far, Arctic sea ice has reached its lowest level ever on modern record. It is also thinner. While the Arctic sea ice does not contribute to sea level rise, it does serve as an indicator for how our ... continue reading


You'll never believe what blessing God bestowed upon California! Watch

Image of Lake Shasta reservoir is in danger of overflowing (California Department of Water Resources).

By Kenya Sinclair (CALIFORNIA NETWORK)

Imagine you have a farm and the years have been kind. You look out at your bountiful harvest that God has blessed for generations and you smile with pride and joy.Then the unthinkable happens; a horrible drought hits and suddenly the future of your farm, which has ... continue reading


All Green News

Newsletters

Newsletter Sign Up icon

Stay up to date with the latest news, information, and special offers

Subscribe to Catholic OnlineYouTube Channel

the FEED
by Catholic Online

Daily Readings

Reading 1, Acts 1:1-11
1 In my earlier work, Theophilus, I dealt with everything Jesus had done ... Read More

Psalm, Psalms 47:2-3, 6-7, 8-9
2 For Yahweh, the Most High, is glorious, the great king over all the ... Read More

Gospel, Luke 24:46-53
46 and he said to them, 'So it is written that the Christ would suffer ... Read More

Reading 2, Ephesians 1:17-23
17 May the God of our Lord Jesus Christ, the Father of glory, give you a ... Read More

Saint of the Day

Saint of the Day for May 5th, 2016 Image

St. Hilary of Arles
May 5: Bishop of Arles, France, and friend and relative ... Read More