Ok so here is an update.
I just stripped the fish and got six eggs and one shell. Another shell drifted off into the tank. So that would have been a total 10 eggs laid.
I know that these eggs are not infertile because there have the same white dot attached to the side of the egg. A couple of them have long white filaments that eminate from the dot on the side to the center - 3/4 distance across the egg. The one egg that had burst that I stripped had a yellowish mass attached to the side of the shell.
I have tried to take pictures of this, but, like I said my camera skills suck better than a brand new built in hoover. I have some pictures to load up but my batteries calfed out and I also found out that not all batteries can power up a digital camera.When I have recharged my sony camera batteries I will upload the pics and post them.
So for now I will give a verbal descriptive of what I set up.
I came up with 3 different plans of action and had to wait to see how many eggs I was able to strip from the fish.
I split the eggs so that there is one well under way egg and one just starting developmental eggs in each place.
I have placed a breeder box up against my overflow in the 180g. The water level is 3/4 up on the box so no way for the eggs to jump ship as it were. The current is steady but soft because my return pipe creates a nice down spiral that curls around the overflow box bottom and makes it so that ther is not a killer current going through the box.
I have placed 2 more eggs in the tumbler and made sure that there is not heavy movement making the eggs rub against the screen. I jerry rigged this so that the tumbler can not self adjust it's angle and so mess up things.
I have taken another breeder box and situated it over top of the tumbler about 1 inch to the right of where the bubbles are coming out of the tumbler there by creating a soft up current to move through the box.
The behaviour of the sharks was interesting to see. When I put the male back in the one female who had laid the first eggs went to check out the male and they swam a bit together. Now the 3 of them are taking turns swimming against the down current.
I can not say for sure what the mating behaviour of columbian sharks is because I really do not know. I will however do my best to keep a watchful eye over the tank to see if I can get any laying and fertilizing of eggs caught on film.
I am almost positive that of these 6 eggs I will be able to get a fry.
I just stripped the fish and got six eggs and one shell. Another shell drifted off into the tank. So that would have been a total 10 eggs laid.
I know that these eggs are not infertile because there have the same white dot attached to the side of the egg. A couple of them have long white filaments that eminate from the dot on the side to the center - 3/4 distance across the egg. The one egg that had burst that I stripped had a yellowish mass attached to the side of the shell.
I have tried to take pictures of this, but, like I said my camera skills suck better than a brand new built in hoover. I have some pictures to load up but my batteries calfed out and I also found out that not all batteries can power up a digital camera.When I have recharged my sony camera batteries I will upload the pics and post them.
So for now I will give a verbal descriptive of what I set up.
I came up with 3 different plans of action and had to wait to see how many eggs I was able to strip from the fish.
I split the eggs so that there is one well under way egg and one just starting developmental eggs in each place.
I have placed a breeder box up against my overflow in the 180g. The water level is 3/4 up on the box so no way for the eggs to jump ship as it were. The current is steady but soft because my return pipe creates a nice down spiral that curls around the overflow box bottom and makes it so that ther is not a killer current going through the box.
I have placed 2 more eggs in the tumbler and made sure that there is not heavy movement making the eggs rub against the screen. I jerry rigged this so that the tumbler can not self adjust it's angle and so mess up things.
I have taken another breeder box and situated it over top of the tumbler about 1 inch to the right of where the bubbles are coming out of the tumbler there by creating a soft up current to move through the box.
The behaviour of the sharks was interesting to see. When I put the male back in the one female who had laid the first eggs went to check out the male and they swam a bit together. Now the 3 of them are taking turns swimming against the down current.
I can not say for sure what the mating behaviour of columbian sharks is because I really do not know. I will however do my best to keep a watchful eye over the tank to see if I can get any laying and fertilizing of eggs caught on film.
I am almost positive that of these 6 eggs I will be able to get a fry.
