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Blocking Net - Tilapia
#330396 04/14/13 03:49 PM
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After reading posts, and advice from ewest, I felt like a blocking net had tons of merit. Since I haven't needed it yet in a grow out pond, I thought I would try this first.

First pics are of partial bag of Tilapia I picked up at Overton's on Monday. After talking to Todd, I selected a bag that had a close 50% mix of large to small Tilapia.


Next pic is of 2 blocking nets set up before dumping Tilapia. The 8' space between the 2 nets is where I overnighted the 90 pounds of Tilapia that were to be released into the big puddle. Left of the left net is where I dumped the 10 pounds of mixed Tilapia.


Saturday morning, I pulled the outside net, as released the 90 pounds of tilapia. I then zip tied the 2 seine nets together, and moved it out as far as I could, which was around 40'. The 10 pounds were then confined to this area. I'm hoping to get a protected spawn in this area, and then release them when the hatch are large enough to survive.


Worse case senario, I have the same amount of Tilapia I started with only larger. Best case scenario, is a protected spawn from an area that requires no maintenance since it's actually part of the big puddle.

The Tilapia were hitting pellets this am, and like Brian I found 4-6 areas I think were the start of spawning beds. I'll confirm that later this week.


Last edited by FireIsHot; 11/03/18 05:32 PM.

AL
Re: Blocking Net - Tilapia
FireIsHot #330411 04/14/13 05:01 PM
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Allen, that looks great, I can't wait to see how your setup works. How are you going to transfer the tilapia from the "Compound" to the bid puddle? Are you worried about any predators getting past the net and crashing the buffet?

One other thing, how deep is the "Compound?" Is your blocking net going to stay out all summer long? Are you worried about it getting damaged?

Last thought, Robbie Hall is one tough worker!!! You choose wisely......


Brian

The one thing is the one thing
A dry fly catches no fish
Try not to be THAT 10%
Re: Blocking Net - Tilapia
FireIsHot #330415 04/14/13 05:48 PM
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I'll just pull the net after I confirm whether this deal works or not. I can't imagine it still being there by July. The water in this cut is very clear, and other than FHM and a few small BG, there was nothing in it. If a LMB jumps the fence, I'll just seine him out. The cut is about 4' deep in the center, and about 100' long.

Robbie loaded all the fish at Overton's, helped reset a feeder deck, move 3 feeders, and sprayed fence rows for 10 hours this weekend. She's a very lucky woman to have me.


AL
Re: Blocking Net - Tilapia
FireIsHot #330421 04/14/13 06:57 PM
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go with that..... grin


Brian

The one thing is the one thing
A dry fly catches no fish
Try not to be THAT 10%
Re: Blocking Net - Tilapia
FireIsHot #330438 04/14/13 09:08 PM
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Good job Al and thanks for the pics and report.
















Re: Blocking Net - Tilapia
FireIsHot #330443 04/14/13 10:01 PM
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Al, 6-8" tilapia will reproduce more, faster. As they reach 3/4 pound in size, a single male will defend a pretty large diameter around it's nest (as much as 10' depending on clarity)

Re: Blocking Net - Tilapia
FireIsHot #330457 04/15/13 06:49 AM
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Rex, I was initially planning to try to sex the Tilapia and keep the numbers a little more manageable. I'll try to do that soon, and hopefully reduce the numbers in the area to a prom instead of a rave.

I really needed to get those fish in the water, or I was going to try it last Friday when we picked them up. We'll see in the next week or two if the spots are indeed nesting areas, then I'll go from there. To me, 7 or 8 pairs would be the perfect scenario for size of this location.

Last edited by FireIsHot; 04/15/13 06:50 AM.

AL
Re: Blocking Net - Tilapia
FireIsHot #330572 04/15/13 05:49 PM
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Al...Have you asked the tilapia if they will cooperate? lol They will go over or under most nets if they want. I can't sex the buggers, no matter what the size, with or without dye. Like an LMB, I only know a female if it is holding eggs/fry. crazy

Last edited by Rainman; 04/15/13 05:51 PM.
Re: Blocking Net - Tilapia
FireIsHot #330573 04/15/13 06:09 PM
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Rex, glad you said that about sexing them. Exactly what I was thinking too, but I didn't want to appear fisheries challenged. I do the same with LMB.

I'm fine if a few get through. Funny thing is when I released the 90 pounds, about 15 stayed overnight and were nose to the net the next morning. I guess they missed their buddies.

We'll see how it goes, but no harm no foul if this doesn't work. This cut is where I'm putting in a grow out pond next year, so I know those won't get out.


AL
Re: Blocking Net - Tilapia
Rainman #330574 04/15/13 06:33 PM
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Originally Posted By: Rainman
Al...Have you asked the tilapia if they will cooperate? lol They will go over or under most nets if they want. I can't sex the buggers, no matter what the size, with or without dye. Like an LMB, I only know a female if it is holding eggs/fry. crazy

FWIW, Overton can and will provide either sex Mozambique tilapia by inspection as fast as he can net them - I have pictures somewhere and M/F was evident to me.

For years I stocked all male Mozambique tilapia in our forage pond for algae control w/o risk of over-population.

Al, I will try to dig those pictures out of my old files if I can find them.
IIRC, Todd was showing Brian M/F ID when we were at his farm last week?
G/

Last edited by george1; 04/15/13 06:42 PM.


N.E. Texas 2 acre and 1/4 acre ponds
Original george #173 (22 June 2002)




Re: Blocking Net - Tilapia
george1 #330575 04/15/13 07:03 PM
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Al, here's pictures of M/F ID for sexing your Mozambique tilapia. Overton's hands on ID for my photos many years ago.
I have stocked tilapia for so many years, I take them for granted... cool

Male Mozambique Tilapia


Female Mozambique tilapia



N.E. Texas 2 acre and 1/4 acre ponds
Original george #173 (22 June 2002)




Re: Blocking Net - Tilapia
FireIsHot #330600 04/15/13 09:18 PM
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http://www.pondboss.com/forums/ubbthreads.php?ubb=showflat&Number=103583&fpart=1

These are tilapia but you can get an idea of what Todd is saying.

Male on left , female right.

















Re: Blocking Net - Tilapia
FireIsHot #330702 04/16/13 01:05 PM
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Awesome idea! Interested to know how this turns out.


"They that can give up essential liberty to obtain a little temporary safety, deserve neither liberty nor safety."- Ben Franklin

"Timid men prefer the calm of despotism to the tempestuous sea of liberty."-Thomas Jefferson
Re: Blocking Net - Tilapia
FireIsHot #330722 04/16/13 04:03 PM
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Thanks for the info guys.

I felt like should add something I neglected in the initial post. I'm trying this for 2 reasons:
1) To see if I can
2) Forage for my CNBG

Since my electroshocking and removing 180 pounds of LMB, I've dedicated this year to CNBG. My thought was to release the Tilapia fry as soon as they were free from the female's mouth and actively roaming on their own. Hopefully, the CNBG will eat them as soon as they hit the big puddle.

I in no way expect these newly hatched Tilapia to really help the FA, because I hope they get eaten. Even if this works, I'll continue to annually stock 10 - 15 pounds per acre of adult Tilapia to help control FA.


AL
Re: Blocking Net - Tilapia
FireIsHot #330732 04/16/13 04:37 PM
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If the blocking net has large enough mesh, won't the YOY swim thru it on their own?


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3/4 to 1 1/4 ac pond LMB, SMB, PS, BG, RES, CC, YP, Bardello BG, (RBT & Blue Tilapia - seasonal).
Re: Blocking Net - Tilapia
FireIsHot #330736 04/16/13 04:46 PM
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It's 1/4" so I'm not sure. If this works, I'll dedicate a better net with a larger weave. Great thought. That could really be a time saver. Right now, I'm planning on netting and tanking the large males and females, pulling the net, and restarting if they spawn.


AL
Re: Blocking Net - Tilapia
FireIsHot #330759 04/16/13 05:52 PM
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Al, I would be concerned most of your fry will get eaten by fellow tilapia rather than making it to your CNBG when the tilapia are concentrated...they have a strong craving for the babies, plus females will hold longer/reproduce less often due to the fry predation threats present. Fry will easily swim through a 1/4" mesh as they will be about 1/4" long when released. Any way it goes Al, you're gonna have fun with it!

Re: Blocking Net - Tilapia
Rainman #330762 04/16/13 06:05 PM
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Originally Posted By: Rainman
Any way it goes Al, you're gonna have fun with it!


Rex, that's exactly the point. I'm not out one penny to try this and if it works, no telling what species I may try next.


AL
Re: Blocking Net - Tilapia
FireIsHot #330837 04/17/13 09:30 AM
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An old blocking net trick ! Dang I am giving away my secrets.

Once you have adults and babies (YOY to free swimming stage)behind the net and you want to separate them try this. Slowly reduce the size of the enclosed area by closing the net inward (closing a circle). Take each end of the net and walk them slowly to meet in the shallow water then move to a little deeper water as you close in the net more (shrink the circle). When the circle is reduced to a small size move it (with the larger fish still enclosed) back to shallow water and slowly redeploy the net by seining backward. Many of the yoy will be outside the net and be subject to predation by the outsiders.

Last edited by ewest; 04/17/13 09:31 AM.















Re: Blocking Net - Tilapia
FireIsHot #330845 04/17/13 09:45 AM
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Ha Ha! Eric, you're not giving away secrets, you're being a helper bee. That's what makes this forum work.

Heading to farm Friday, so I'll see what I have then.


AL
Re: Blocking Net - Tilapia
FireIsHot #330913 04/17/13 01:20 PM
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Another thing you can do if a lmb gets in there, Do the circle bit again. At some point, that sucker will almost always jump the net.


It's not about the fish. It's about the pond. Take care of the pond and the fish will be fine. PB subscriber since before it was in color.

Without a sense of urgency, Nothing ever gets done.

Boy, if I say "sic em", you'd better look for something to bite. Sam Shelley Rancher and Farmer Muleshoe Texas 1892-1985 RIP
Re: Blocking Net - Tilapia
FireIsHot #330977 04/17/13 06:34 PM
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Wear head and at least eye protection...tilapia will launch several feet in the air when crowded, but it is a blast to watch the eruption!!

Re: Blocking Net - Tilapia
FireIsHot #331069 04/18/13 03:38 PM
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The trick is to go slow with the net.
















Re: Blocking Net - Tilapia
FireIsHot #331082 04/18/13 04:17 PM
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We had the big rain roll through early today, hopefully I won't have a big muddy mess in the morning.


AL
Re: Blocking Net - Tilapia
FireIsHot #331086 04/18/13 04:43 PM
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Allen, how much rain did we get?


Brian

The one thing is the one thing
A dry fly catches no fish
Try not to be THAT 10%
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