BallAquatics
Forum Replies Created
-
Posts
-
That’s fantastic, thanks for the update on your project. Also, congratulations on your fry.
@plunket wrote:My concern now is how long I can keep them in these small tanks??
I keep my fry in the breeder set-up, (5.5 US gallon tanks), for the first 30 days. Depending on the number of fry, I like to do daily water changes of up to 90%.
@plunket wrote:
….I’m just not sure when it will be safe to move the babies to the main tank?? Any advice??
I would think any where around the eight week old range should be big enough to go into the main tank. Under optimal conditions, your fry should be sexually mature and around 3/4 adult size at 12 weeks old.
Thanks again – Dennis
Yes they eat the spirulina. You can even mix in some yeast if you want. I’ve used a yeast/powered spirulina recipe for feeding daphnia many times. Actually, I think we are talking about two different things here.
When I talk of green water, I’m talking of what is often referred to as a green water algae bloom. The single cell algae number enough to tint the water green.
When I talk of tiny micro-organisms, I’m thinking of infusoria. I guess it’s a bit confusing. There may be a few infusoria in a green water cluture, but there is seldom green water in an infusoria culture.
I use Mike Hellweg’s book, “Culturing Live Foods”, for all my culture recipes.
Dennis
I’ve always just mixed it with a bit of tank water and then strait into the tank. I don’t like it as well as real green water because it will eventually precipitate out of the water column, but when you don’t have any green water…..
Dennis
You are very welcome Marius. It sounds as though you are having lots of fun, and your enthusiasm for spawning this little fish is infectious. In other words, I’m having fun just by following your posts!
Dennis
@Pushkatu wrote:
At this point it’s ok to feed them right?
Yes, once they are free swimming they will accept food. Your green water or other tiny, (5-50 micro sized), food will work well at this stage. In about a week they will be big enough to eat walter worms and then at 10 to 14 days baby brine shrimp.
Dennis
Hi bluestems, welcome to the forum!
I’ve never kept CPD’s with any of the rasboras, but when I’ve housed them with other small danios they typically stay with their own. I will say that keeping a more out going fish with timid CPD’s often helps them over come some of their shyness.
Dennis
Once your fish became comfortable in the breeder set-up, they may have spawned on several different days so you will probably see more fish every day for the next week or so.
Dennis
Congratulations Marius!
Don’t start with your green water until they are swimming about. With your moss, I wouldn’t worry about them starving. They will find much to eat from the micro-fauna that is growing in the moss.
Dennis
I should know the answer to this and if my record keeping was a little better I could give you an exact figure. That said, small fish generally have shorter lifespans than larger fish. I’d put the average for CPD’s at around 3 years.
Dennis
I wouldn’t risk feeding them anything until you see fry actively swimming around. Until then, they are not looking for food, and you run the risk of fouling the water quality.
Dennis
Well it depends on several factors. When the fish actually spawned, and the water temperature being the 2 most important.
I set my breeders up for 7 days in unheated tanks. I have seen fry as soon as the day after I remove the adults, but that’s not very common. It’s usually more like 7 to 10 days before seeing any fry. I’ve seen it take up to 2 weeks!
I’ve been spawning fish in one form or another this for almost 45 years… I don’t think you’re craze at all! :roll:
Dennis
Not really sure about that one, I don’t keep any other fish in my breeder set-ups.
I do know otocinclus cats are about the only fish I’ve found that won’t eat baby freshwater dwarf shrimp.
Dennis
@Pushkatu wrote:
From your experience is there an easy way to catch them, or I’ll have to do it the hard way?
I remove my sponge filter and lift the moss so they can’t hide under it, and then just net the adults. If you move the net slowly and deliberately they are not too hard to catch. If you start chasing them with the net though, it can be entirely different!
The eggs are not adhesive, so the ones that are not caught up in the moss will simply fall to the bottom of the tank.
Dennis
I would imagine they are eating all the eggs and/or fry and that’s why you haven’t seen anything.
When I run out of room for fry, I will often just leave the breeders in a 5 gallon breeder set-up. I vary rarely see any fry as long as the adults are in the tank. When I’m ready for more fry, the adults go into a new breeder set-up and about 90% of the time the tank that wasn’t showing any fry will have fry in a week to 10 days after the adults are removed.
Most aquarium fish, if they are well taken care of, will spawn on a regular basis. The problem is that they eat the results… so many hobbyists are not aware that their fish are reproducing.
Best of luck with your breeding project!
Dennis
@Pushkatu wrote:
If I keep my CPDs in the same tank with Danio erythromicron, is it possible they cross-breed?
I have heard that there is very good chance that they will interbreed. Not something I would recommend however.
Dennis
