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Rainbow shiner breeding in 10-gallon tank.

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#1 Guest_Khai Wan_*

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Posted 04 October 2014 - 03:45 PM

Just want to let anyone who is interested into breeding rainbow shiners. I've been wondering for awhile as to what tank size would the rainbow shiner be comfortable in breeding. I have tried breeding on 20-gallon (long) and it is no problem. Obviously in my 40-gallon long tank, they are breeding machine (eg. almost every 10-13 days). I read in the Internet that people had successfully breed in a 15-gallon tank. But today, to my surprise, my F1 rainbow shiners breed in the 10-gallon tank. In this tank, I placed 12 rainbow shiners (ie.not sure how many are female or male; usually the plump one is female and the slender one is male). They have been in breeding frenzy since this morning until as of writing now. I did not expect this to happen because my intention of putting them in the 10-gallon tank is just mainly to raise them up. The 10-gallon tank has a sponge filter and no gravel or any pebbles! They just lay the eggs in the bottom corner of the tank. The rainbow shiners in my 40-gallon tank also did the same, they lay eggs in the bottom corner of the tank without a single pebble. Eggs will be scattered out and they do their thing. They are prolific egg eaters as well. During breeding period, I tend to feed them generously so that they have the adequate energy. Normally in my observation the past 2 years, they will be in breeding frenzy for 2 days and then gradually color will fade back to dull.

#2 Guest_Mysteryman_*

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Posted 05 October 2014 - 12:29 PM

Nice! I guess you F1's are much easier to please than wildcaughts, eh?

#3 Guest_mikez_*

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Posted 06 October 2014 - 08:00 AM

They are prolific egg eaters as well...

That being the disadvantage of the smaller tank. They'd be less likely to get 'em all in a bigger tank.

#4 Khai Wan

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Posted 27 November 2014 - 09:01 AM

These photos are taken this morning 8:30am (thanksgiving day). They seem to exhibit breeding pattern every 2 weeks or so. They are my F1 inside the 10-gallon tank. They have been there since birth.

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#5 Khai Wan

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Posted 27 November 2014 - 09:03 AM

Notice that they gather together at the corner - it has been that same corner, all the time. This breeding behavior will last for about 48 hours - continously. The color will fade back to normal. During this period, I feed them generously as they needed the extra food for exertion.

#6 Michael Wolfe

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Posted 27 November 2014 - 09:24 AM

That is very cool Khai... a couple of comments...

...in the third picture that one off to the left with the whitish side looks rather plump... I have seen yellowfins during breeding colors have that neon silver white sheen on the side of particularly robust, deep, fat individuals.

... you make a very good point about the color requiring exertion for them... I have heard others (and experienced myself) that you get some mortality after an extreme coloring, spawning, event... I am thinking that you are avoiding this by providing the extra nutrition... good job.

...the surroundings look very "fish roomy" are these at room temperature, or are they in a place that's cool... I know we have talked before, but I cant rememebr are you in a cold climate where you can keep the temps down for them?

Make your own chub nest in that corner and see if you can get some eggs down in the protected areas!
Either write something worth reading or do something worth writing. - Benjamin Franklin

#7 fundulus

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Posted 27 November 2014 - 11:37 AM

Yeah, those males look nearly all-out with their coloration and probably with their steroid expression as the immediate cause of that coloration and behavior - 11-ketotestosterone is powerful stuff.
Bruce Stallsmith, Huntsville, Alabama, US of A

#8 Khai Wan

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Posted 27 November 2014 - 12:35 PM

Michael, in my basement, the current room temperature is hovering around 66 degrees. Can't wait to get down to Georgia for yellowfin shiners! Hopefully will have success in breeding yellowfin as well.

#9 Isaac Szabo

Isaac Szabo
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Posted 02 December 2014 - 09:14 PM

Awesome fish. It's very cool that they're all fired up for you.

#10 mattknepley

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Posted 03 December 2014 - 06:28 AM

Very cool! Thanks, indeed, for posting.
Matt Knepley
"No thanks, a third of a gopher would merely arouse my appetite..."

#11 gerald

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Posted 03 December 2014 - 10:35 AM

I had rainbow shiners (from Centerville AL) for 3 generations over 10 yrs, that lived at room temperature without any deliberate winter cooling or light cycle manipulation. Their tanks ranged from about 68 F in cold weather to 82 F in hot weather, and light cycle was about 12-14 hrs light, 10-12 hrs dark year round (shop lights on timer). The room has north and west windows, so they did get some natural photoperiod influenece. They would breed randomly nearly any time of year, usually for a few hours in early morning. I dont recall seeing them stay in "electric" mode continuously for more than a day, like Kai's fish.

Gerald Pottern
Hangin' on the Neuse
"Taxonomy is the diaper used to organize the mess of evolution into discrete packages" - M.Sandel

#12 Mysteryman

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Posted 13 December 2014 - 06:49 PM

I love how they "light up" when you sprinkle some fishfood on the creek. Fish which were barely visible suddenly turn into little blue neon signs. That's just one of the coolest things in all of fishdom. Rapid chromatophore control is really neat.

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