[Sc-aquaponics] grading tilapia

[Tiu, Laura]

I was going through some old email this morning (I know you won't believe it, but I got a message saying my email was "too full") and I came across this one.  I think it's great information for those of you curious about grading tilapia, and since the tilapia in our hobby system spawned, I'm thinking about this.  The links to aquatic ecosystems (now Pentair) do not imply endorsement, they simply serve as examples.
Laura

Laura Tiu, PhD Aquaculture Extension Specialist
740-289-2071 x.121 Office | 800-297-2072 x. 121 Office
tiu.2 at osu.edu

From: tiu.2 at ag.ohio-state.edu [mailto:tiu.2 at ag.ohio-state.edu] On Behalf Of Charlie Shultz
Sent: Thursday, April 19, 2012 6:10 PM
To: Tiu, Laura
Subject: AQUA-OHIO: Re: grading tilapia

Great links, Laura!

here's some more info on grader bar sizes:

Grader Bar Size Retention
Bar Size (gap distance)                          Mean Fish Size
                                                                                      2.71 g
22 (8.73 mm)
                                                                                  5.45 g
27 (10.72 mm)
                                                                                  9.64 g
32 (12.70 mm)
                                                                                  15.34 g
36 (14.29 mm)
                                                                                  32.11 g
48 (19.05 mm)
                                                                                  76.94 g
62 (24.61 mm)
                                                                                  113.68 g

and some products from Aquatic Ecosystems:
http://www.aquaticeco.com/subcategories/1130/Floating-Fish-Grader (buy whatever size grader you need)

http://www.aquaticeco.com/subcategories/1131/Adjustable-Floating-Fish-Graders (adjustable)


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