Last wed I had blacktail shiner eggs. Five days and 6 hours later and I have fry!!! Only about 10 right now. Not to mention I also got engaged Saturday!!! All good things. On to the info part.
There isnt alot of information on raising or breeding black tail shiners so I will share my experience for future reference.
Blacktail Shiners Cyprinella Venusta
Starting Thte breeding process
The fish started breeding as I brought water temps up to about 75 degrees from around 68 to 72. I also wasn't doing water changes. Instead I would top off the aquarium and monitored my water. As the nitrates went over 180ppm I did a large water change 30-50% and flushed out alot of the nitrates. This imitates rain and spring, or so I have been told. Amonia and nitrites were always at 0. PH at 7.6-7.8. I also started ading cyclop-eeze to the feeding routine. Before you knew it I watched them laying eggs in crevices under my 2"-3" rocks in the substrate. I use rocks ranging from .5" to 3"-4".
Caring for the eggs
I collected the eggs immediatly after they were fertilized and moved them into another aquarium (with very little flow) They say in the wild eggs are laid in current averaging around .6mph. You will know the eggs are fertilized when the male joins the female in the crevice and rubbs on her for a few seconds. She has already laid the eggs at this point and he is actually simply fertiling them. After the eggs are fertilized the female will leave and the male will guard them. After collecting the eggs I just put my eggs in a low flow aquarium as far away from the filter as I could. 5 days and 6 hours later at 76 degrees and they are just starting to hatch. Normal Red shiner hatch time is 3-5 days.
The fry are long and thin, they are clear in color minus their eyes. They are extremly hard to see even in a net. They appear too small to feed crushed flake and cyclop-eeze so I will attempt baby brine shrimp in the morning. If that doesnt work I have some infusoria Iv been culturing too.
I will update this info as I move through the process of trying to grow out these fry.
Today I can count over 50 little squiggly things and there are still some hatching. I think a fair hatch period is 7 days for these shiners, unlike most of the others that hatch in 3-5 days. Indeed they are too small for brine or crushed flake.
Infusoria it is.
However I dont think they are eating yet. They arent what I would call free swimming at the moment, they rest on the bottom and shoot around if bothered.
To keep track of my project today I have 10 free swimming fry and about 50 fry still hugging the bottom.
All the egg shells disapated on their own.
My infusoria culture has gone foul and Im not quite sure why. Until I start it again Im hoping they can make it on baby brine shrimp.
The fry developed small circles for stomachs but it could be an unhatched brine shrimp egg that im afraid may get stuck in there intestines.
So far they still have no color other then their stomachs and eye balls.
Iv lost three today, they were the first casualties. There are a few others that look cloudy but are still moving when disturbed.
Im hoping for a 75% survival rate.
I think I have around 60 fry total.
Today I only have about 10 fry left at the bottom the rest are free floating. I did lose one more fish though.... It is a nice sight to see all these little guys, their so amazing to watch. They are still very small, too small to mix with my swordtail fry that are just one week older. Im affraid the other fry will eat them.
Lost one more today I can see a few are ingesting baby brine by the color in their stomach but im a little worried since at this point I could have had another infusoria culture started. I hope they can all make it....
Cant wait to grow out these little buggers.