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Rainbow Shiner Breeding Journal


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On 1/9/2024 at 10:46 AM, msudawgs56 said:

These are beautiful native fish. No need to run a chiller?

No, not for this species. They will do well at room temperature between 65-75 F. As long as you keep enough air flowing into the tank, they can thrive in the upper limit of their temperature range. If, however, they reach 80-F for prolonged periods of time, they do begin to struggle.

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Here’s my 33 gal long ‘Bama Blue Rainbow Shiners all fired up after a low front passed through…

They spawned like this for 12-hrs straight…

I pulled a nice haul of eggs. We’ll see how they pan out this time…

 

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I’m starting to pay more attention to barometric pressure drops in my region. For example, this coming Tuesday-Wednesday looks like a good window to see US Natives go into spawning mode…

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From this past week through Monday morning, I feed heavy: live larvae & frozen foods. Then I change water (40-50%) as the pressure drops — ca. Monday, and present a stone tray for Shiners (or yarn mop with Banded Darters) to induce spawning. I leave lights on for 48-72 hrs as well. During this time I do _not_ interrupt breeding by feeding. As pressure rises back up, I remove tray, feed, and return lights to normal schedule.

I suspect that the barometric change releases just enough pressure that triggers egg layers / egg scatterers to spawn. As long as your females are healthy, full of roe, and not harassed, they’ll cue up the males.

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I'm starting to see some of my females get a little more round. Hoping that indicates they're full of eggs, and not just fat! Still haven't seen anything I recognize as breeding activity. 

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On 5/25/2024 at 11:37 AM, Chris said:

I'm starting to see some of my females get a little more round. Hoping that indicates they're full of eggs, and not just fat! Still haven't seen anything I recognize as breeding activity. 

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They still look less than 12-months old. Probably not yet ready to spawn.

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On 9/8/2024 at 8:35 PM, Mississippi fish guy said:

My brother was wondering if rainbow shiners and darters would work in a 20 long?

It is possible, yes. I don’t recommend more than 12x Rainbow Shiners. Choose your Darter species very carefully. You probably could put 5-6 Darters maximum. They need to be peaceful.

If you would like to DM, feel free to reach out. There’s a fair bit to think through in order to get things just right.

If you could get a 45 long, or a 33 long (same footprint as 55 gal), those are phenomenal aquarium dimensions. 20 long is great for breeding small species, but needs to be managed intelligently for NANF.

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