HomeLatest ThreadsGreatest ThreadsForums & GroupsMy SubscriptionsMy Posts
DU Home » Latest Threads » Forums & Groups » Topics » Science » Science (Group) » Fish shoots down prey wit...

Thu Oct 25, 2012, 12:42 PM

Fish shoots down prey with super-powered jet

Katherine Harmon
25 October 2012

With a juicy insect dinner perched on a leaf above the water, what is a hungry little archer fish down below to do? Knock it down with a super-powered, super-precise jet of water that packs six times the power the fish could generate with its own muscles, according to new findings published online October 24 in PLoS ONE.

The stunning spitting power of the amazing archer fish (Toxotes jaculatrix) was first described in the 18th century. The creature lives in mostly in mangrove forests and estuaries where insects are prevalent—above water, that is. And these tasty treats are not easily knocked off of the plants that hang over the archer fish’s territory. The insects, such as grasshoppers, can hang on with a force some 10 times their own body weight.

So the archer fish has developed an impressive strategy for fetching food that not many other fish can reach. Its water jet can target and dislodge a single insect so that it falls into the water for the fish to eat.

Just how the fish manages to do this—and in less than a second—had remained a mystery. Many scientists figured that the source must be a special organ in the fish’s body. “The origin of the effectiveness of the jet squirted by the archer fish has been searched for inside of the fish for nearly 250 years,” Alberto Vailati, a physicist at the University of Milan and co-author of the new paper, said in a prepared statement.

more
http://www.nature.com/news/fish-shoots-down-prey-with-super-powered-jet-1.11668

3 replies, 654 views

Reply to this thread

Back to top Alert abuse

Always highlight: 10 newest replies | Replies posted after I mark a forum
Replies to this discussion thread
Arrow 3 replies Author Time Post
Reply Fish shoots down prey with super-powered jet (Original post)
n2doc Oct 2012 OP
2on2u Oct 2012 #1
On the Road Oct 2012 #2
Scuba Oct 2012 #3

Response to n2doc (Original post)

Thu Oct 25, 2012, 01:02 PM

1. In other news, terrorists and civilians to consider purchasing supersoakers to protect

 

themselves from drone attacks. Interesting article, thanks for posting. What freaks me out is HOW did they come by this technique? What are they reading? Amazing stuff, truly amazing stuff.

Reply to this post

Back to top Alert abuse Link here Permalink


Response to n2doc (Original post)

Thu Oct 25, 2012, 01:52 PM

2. That Sounds Uncomfortably Close to

Reply to this post

Back to top Alert abuse Link here Permalink


Response to n2doc (Original post)

Sat Oct 27, 2012, 06:52 AM

3. Toxotes Jaculatrix would be a great name for a band.

Reply to this post

Back to top Alert abuse Link here Permalink

Reply to this thread