How do you compute the actual age of a matured catfish caught from the river?
548762
You can use the scales to calculate the age of the fish. If you look at a scale with a strong magnifying glass in good light, you count the darker lines ( these are called annuli) their is one of these lines for each year, it is the same as counting the rings on a tree. This technique is useful especially if you dont want to kill the fish. If you want to try another technique you can use the otoliths but this involves fine dissection and scientific knowledge.
1176146
Coudn't find the patent #--but I'm sure that you can. Check out the following link. Happy angling!\n\n\nhttp://www.fish-finder-review.com/eagle-fish-finder.shtml
301023
I doubt that anyone would really be able to answer that unless he or she just so happened to work there.  I suggest calling or e-mailing someone from the aquarium.
795602
Mammal, Bowhead Whale: unconfirmed sources estimate some to be 245 years old.\n------\nBada explained that the method of measuring changes in aspartic acid to determine age has an accuracy range of about 16 percent, which means the 211 year-old bowhead could have been from 177 to 245 years old. \n----\nThen again an unconfirmed sourse says Noah lived to be about 500 years old. =)\n.
212962
Put a white plastic poker chip in it, and push it towards the center until you can't see it. (Or, heat a paper clip up over a candle, melt three holes near the edges of the poker chip, tie it so that it will lie flat, not edgeways, lower it into the water on a string.)  Measure the depth at which you lose sight of it. That will tell you how clear the  water in the puddle is. You may have to tape a penny to the back to give it weight.\n\nIn some mountain lakes, you can see it 30 feet down. In some catfish farms, it vanishes at 4 inches.\n\nIf the puddle is deep enough, use a Frisbee, but use duct tape instead of melting holes in it. The trick is getting the string tied so that the disk is flat, not sideways.
100779
go to www.dec.state.ny.us/website/dfwmr/fish
1164510
You have asked a question that has alot of variables... location, temperature, vegetation, water clarity, size of the body of water and the amount of food available.  Catfish generally grow at rates of 1 to 1 1/2 pounds per year... panfish can grow up to 1 pound per year but are limited by the number of fish present and the size of the body of water and lastly thier species. Largemouth bass (non-hybrid) can grow up to 1 1/2 pounds per year if a good food source is available.
846597
I'm not sure on the year you could probably contact minn kota, I would guess it's less than 4 years old though.
555268
OK a'lot of u don't no anything about catfish! It just depends on what catfish your dealing with and the conditions.  Some catfish in Africa can survive months without water, walking catfish have the capability of breathing oxygen (Bowfin are like this as well) they have something like a lung and this lung has chambers capable of taking in oxygen.  But these fish still need water in order to survive. I was fishing and caught these bullheads (small catfish) we accidently forgot one and this was in the afternoon when I returned the following day around 5-6pm it was still breathing I placed it back into the water and swimmed away.  CONDITIONS: The ground has to be moist or wet/muddy (keeps them cool) and theres a small amount of oxygen in the rain drops, moist ground, or mud.  If it's sunny and hot these fish wont live long (due to the slime drying out) and the slime makes them swim fast/quicker, scent (to find mates), and protects from diseases/viruses.
350519
Try www.texasfishingforum.com
528773
Here's one:\n\nhttp://www.dnr.sc.gov/water/envaff/river/gr_pee_deemap.htm
839715
try this one\n\nhttp://www.amonline.net.au/fishes/fishfacts/fish/iatlan.htm
639060
Not sure about arkansas but for catfish i have always used a treble hook with a sinker about a foot abouve the hook.  and on the hook put 1 live worm and and a dead minnow.  If you have minnows for small mouth and crappie fishing just set up the ones that don't make it on yopur catsish rigs.
1182268
Department of wildlife and fisheries is the way to go, but to really get a fell for the ponds stop the small bait shops in your area, ask the old guy behind the counter he will give you the best info. Seriously I grew up outside Boston and fished the South shore for years but when I moved out to central mass, I had no idea where to begin. I stopped at a little shop out on 122 I believe. And actually talked to the guy who wrote for the Telegram. Some of the best info I have received.
607458
As far as I know, the Giant Mekong Catfish mentioned already holds the current record for largest living fresh water fish.\n\nOther giants of the fresh water realm include the South American giant arapaima (Arapaima gigas), or pirarucu.  There used to be specimens of this giant fish up to 15 feet long and several hundred kilos in weight, but they have been fished out, and individuals over 8 feet in length are very rare now.\n\nThe beluga sturgeon (Huso huso) of Russia at one time may have outweighed even the Mekong catfish.  Archaeological excavations of fish caught in the 14th century show that as many as one fifth of the beluga sturgeon caught back then were between 4 and 6 meters in length (12 to 18 feet).  The largest catch recorded was an individual 6 meters long and 3200 kg (7000 lbs).  Other evidence indicates that historically, this species could actually reach 10 meters (30 feet) in length!  Sadly, overfishing and other factors have reduced the numbers and average size of this slow-growing fish, and most of them now only reach 2 meters or less in size.
416723
http://www.flmnh.ufl.edu/natsci/herpetology/brittoncrocs/csp_amis.htm\n\ntypically 1 year
696812
<>Actually, this is not as easy as I thought it would be.  Here're a couple sites to look at.  I'll see if I can find more.\nPS: I guess it would be easier if you were to specify a particular bivalve.  There is a variety of articles on different ones here:\nhttp://www.student.loretto.org/zoology/Bivalve.html\nhttp://cars.er.usgs.gov/Region_5_Report/html/bivalves.html\nhttp://www.esg.montana.edu/dlg/aim/mollusca/bivalve.html\nhttp://www.chesapeakebay.net/info/hard_clam.cfm\nhttp://www.aquaticinvaders.org/nan_browse.cfm?level=4&key=030201000000\nhttp://www.aquaticinvaders.org/nan_browse.cfm?level=4&key=030201000000