Alaska blackfish attacks blackfish video
#1 Guest_FishofSchool_*
Posted 16 January 2013 - 12:50 AM
--enjoy!
#2 Guest_FishofSchool_*
Posted 16 January 2013 - 01:08 AM
This big bull blackfish (my most favorite fish of all time) is at least 5 years old (note fungal patch on his side, which healed later.) I trapped him out of a wetlands pond in December 2009, north of Anchorage. These fish are part of my research project at the University of Alaska Anchorage. I’m trying to develop best husbandry techniques for keeping blackfish in lab aquaria, while also documenting behavior and trying to determine their method and location of spawning. I also dissect sacrificed specimens for a diet analysis to see if they are eating juvenile salmon.
#3 Guest_Usil_*
Posted 16 January 2013 - 01:16 AM
usil
Edited by Usil, 16 January 2013 - 01:18 AM.
#4 Guest_FishofSchool_*
Posted 16 January 2013 - 01:39 AM
(These fish are in a group of 8 blackfish in a 100-gallon fiberglass tank with sphagnum moss for substrate (great for cover.) Water is slightly chilled to 12/13 degrees C, and daylight is manipulated to simulate natural daylight cycle.)
#5 Guest_don212_*
Posted 16 January 2013 - 08:37 AM
those guys look like a cross between a bass and a bulldog, how big are they? very coolGood question!! I think the swinging camera bag caused the reaction in the 3 males in 3 different tanks. As the fish tanks are in a crowded lab with students walking through often, and based on my own handling of the fish and observing them over 3 years, the orange color of the bag is the one novel factor I suspect triggered it. What do you think?
(These fish are in a group of 8 blackfish in a 100-gallon fiberglass tank with sphagnum moss for substrate (great for cover.) Water is slightly chilled to 12/13 degrees C, and daylight is manipulated to simulate natural daylight cycle.)
#6 Guest_centrarchid_*
Posted 16 January 2013 - 10:09 AM
How do females look? Are you able to get them into good weigh?
#7 Guest_FishofSchool_*
Posted 16 January 2013 - 01:18 PM
Jim--No color pattern changes observed with the aggression displays. Hadn’t considered vocalization! Cool idea!
No luck yet getting females into good condition...stay tuned and thanks so much for all your advice on spawning these fish! Much appreciated!!
#8
Posted 18 January 2013 - 08:12 PM
"No thanks, a third of a gopher would merely arouse my appetite..."
#9 Guest_FishofSchool_*
Posted 18 January 2013 - 10:19 PM
Edited by FishofSchool, 18 January 2013 - 10:21 PM.
#10
Posted 19 January 2013 - 06:49 AM
"No thanks, a third of a gopher would merely arouse my appetite..."
#11 Guest_davidd_*
Posted 19 January 2013 - 12:15 PM
I did't know those kind of fishes because,like you can see I am from Europe. But when I first saw this video, I just thought, that they look like big nasty mudminnows.
So I looked for information abouth those creatures and learned, that they are indeed some kind of mudminnow or at least relatives of them.
Thanks for sharing the video.
#12 Guest_sschluet_*
Posted 19 January 2013 - 03:36 PM
Very cool video, thanks for sharing. When I finally get to AK these are on the bucket list to see.
Who are you working with on the stickleback research in NY?
-Scott
#13 Guest_FishofSchool_*
Posted 19 January 2013 - 04:51 PM
I study only blackfish; everyone else in my lab, under Dr. von Hippel, studies threespine stickleback. Mike Bell and colleagues are the NY researchers who study stickleback in collaboration with our lab.
We just had a physiologist from Simon Fraser U/UBC -- J. Stecyk-- transfer to University of Alaska Anchorage; he will be using blackfish as his model organism to study fishes' ability to survive in oxygen-depleted waters. Hurray! Finally another blackfish researcher!
See this link to his research on Crucian carp:
http://www.phschool....at_goes_on.html
Edited by FishofSchool, 19 January 2013 - 04:53 PM.
#14 Guest_sschluet_*
Posted 19 January 2013 - 05:02 PM
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