Been lurking for a few days now...
#1 Guest_inka4040_*
Posted 19 October 2009 - 10:25 AM
#2 Guest_fundulus_*
Posted 19 October 2009 - 11:26 AM
#3 Guest_inka4040_*
Posted 19 October 2009 - 12:14 PM
#4 Guest_fundulus_*
Posted 19 October 2009 - 01:45 PM
#5 Guest_inka4040_*
Posted 19 October 2009 - 02:07 PM
#9 Guest_BTDarters_*
Posted 20 October 2009 - 02:33 AM
...Am I correct in assuming that the winter temps will be near the low ranges for the shiners but still near the top values for the darters? I wonder what the chance of the darters breeding in such a setup would be....
Firstly, welcome to the forum, inka4040! I hope that you find your stay both enjoyable and informative!
Secondly, you are correct about the temp range being on the high-end for darters. My darters take temps near 80*F, though, as long as the water is well-circulated. It also depends on the species of darter and area of initial collection. Swamp Darters (Etheostoma fusiforme), as they are found in Florida, will probably take high temps better than more northerly species. Also, Rainbow Darters (Etheosoma caeruleum) from Alabama will most likely take higher temperatures better than those from Wisconsin. Although the Rainbows from Wisconsin will take the lower temperatures better...It's really a trade-off. Also, regarding breeding of the darters, you're most likely to have better success with southerly species. If you can provide a cool-down and/or decreased photoperiod cycle, you may get your northerly species to breed, though. Hope this helps.
Brian
#10 Guest_inka4040_*
Posted 20 October 2009 - 01:59 PM
#14 Guest_BTDarters_*
Posted 21 October 2009 - 01:57 AM
To get sunrise/sunset data for a full year, you can go to http://aa.usno.navy..../RS_OneYear.php. You just plug-in the city and state from where your fish were collected, and it gives you a full year's worth of data. If you were trying to breed Rainbow Darters (Etheostoma caeruleum) that you got from me, for example, you would plug in the location of Milwaukee, WI. To induce the darters to breed out of season, you may need to speed up the cycle. Also, you would probably have to have to adjust the tank temperature. This is all speculation, though, as I have only had Rainbow Darters breed for me when I've collected them during the breeding season. I hope that this information may be of help to you, though.
Brian
#16 Guest_nativeplanter_*
Posted 23 October 2009 - 10:06 AM
Hello Brian. Thanks for the welcome and insight. I've been drooling over your site for years. Fortunately, I've got a bit of experience messing with photoperiod lenght from growing slipper orchids, so it should be no big stretch to do it for the darters. Unfortunately I will have to rely on whatever is commercially availabe whenever the tank is ready so I doubt my ability to source fish from specific collection areas. As for details about the required light and dark periods necessary to induce breeding, where would I go about sourcing such info? Would there be anything like seasonal fluctuation tables available? Not sure about this aspect of the fish hobby, but for orchids, one can find really detailed annual change reports given that most will not bloom without the proper seasonal fluctuations.
Reply to this topic
1 user(s) are reading this topic
0 members, 1 guests, 0 anonymous users