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Impact of Stained Water on Feeding Activity
#1
Guest_centrarchid_*
Posted 31 January 2013 - 02:29 PM
#2
Posted 31 January 2013 - 03:03 PM
#3
Guest_centrarchid_*
Posted 31 January 2013 - 04:41 PM
Edited by centrarchid, 31 January 2013 - 04:42 PM.
#4
Guest_GoFisch_*
Posted 01 February 2013 - 04:55 PM
That reminds me of sampling studies in our South Dakota plains streams that were historically turbid but have become clearer with the building of dams. We are seeing a shift from species like the flathead chub and sturgeon chub that were adapted to turbid streams to more generalized species like the red shiner and fathead minnow.
Not sure if that tells you anything you didn't already know. I used to be a fisheries major....but that was many moons ago.
#5
Guest_gerald_*
Posted 02 February 2013 - 01:09 PM
I think depth is a factor too. In stained or turbid water sunfish (and probably other spp) seem more willing to venture toward the surface or into shallows areas that they avoid when water is clear. Bird-paranoia I guess.
#6
Guest_rjmtx_*
Posted 02 February 2013 - 06:45 PM
#7
Guest_Auban_*
Posted 03 February 2013 - 04:57 AM
i have been using some pretty ridiculous(super bright and lots of UV) lights one of my tanks lately and have noticed that the fish only come out when i dose a home made blackwater extract. otherwise, they hide. if i over dose on the fertilizers(the tank is more for the plants) i can see how far the UV penetrates by looking at the cyanobacteria growing on the tank walls. cyano pretty much refuses to grow in the presence of UV, or at least the kind that usually plagues tanks does. with a lot of tannins in the water, the cyano will grow right up to within an inch or two of the surface.
as the tannins clear, the cyano recedes deeper and deeper into the tank, until it disappears wherever the lights hit it directly.
just a thought.
#8
Guest_Bob_*
Posted 03 February 2013 - 09:45 AM
One other variable that may be a factor: generally, sunnies don't have the dentition that cichlids do. I've had better luck getting Lepomis species to eat pellets if I soaked the pellets first.
#9
Guest_centrarchid_*
Posted 03 February 2013 - 10:16 AM
Gerald I hope you are not talking about Rush, he is a Missouri treasure now and I was trying to shut that out of my mind.
rjtmx, the night feeding thing will be addressed soon with larvae but it might also be important for adults. Not all adults roost all night. They do effectively roost based on what I have seen.
#10
Guest_SunfishGuy99_*
Posted 09 February 2013 - 01:15 PM
Hi, are you Ray Wetzel? If so, i am wondering how you got your liscense in nj to catch blusespotted sunnies and all those endangered eneacanthus sunfish? If you are not Ray Wetzel, sorry for bothering you.We keep lots of sunfish indoors, bluegill mostly, and all must consume pellets to meet nutritional needs. Virtually all we keep were lab spawned and reared yet many are causing problems when comes to ensuring good feed intake. Coppernose and handpaint bluegill as well as crappies in particular are real boogers when comes to getting them to eat. With these guys we often have to shade tanks which is not always practical. Something we are seeing which I think is real involves fish eating better when water gets the tea like appearance. When we up make-up water causing water to clear, feed intake goes down while reverse happens as water goes greenish brown.
#11
Guest_centrarchid_*
Posted 10 February 2013 - 08:14 PM
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