Jeg kjøpte 6 av disse på auksjonen i dag. Er veldig fornøyd! De er veldig aktive og svømmer i hele akvariet rett etter jeg slapp dem ut. Åpenbart kvalitetsfisk fra et godt hjem😃
Hej Frode, tack för att du stöttar mig både här och genom auktionen. Kul att höra att de kommit till ett trivsamt hem ^^ Skulle du undra över något så är det bara att dra iväg ett meddelande annars kanske vi ses nästa gång :)
Great video Mike. Luxury accommodation for corys. I keep mine in smaller tanks with almost identical water parameters. They spawn quite easily for me, but they're manic, yours are quite laid back by comparison. I collect the eggs and get about 90% hatch rate from them, but I can't seem to raise the fry very well at all. Out of the last spawning I raised 3 out of about 130 eggs. I start the fry on infusoria after they absorb the yolk sac, 48h, and they seem fine but after 5 days they slowly start dying off. 1 or 2 at first but then by day 10 there are only 12 or so left. Daily water changes with clean, warm water, good aeration and floating plants in the rearing tubs. How do you hatch and raise yours, please?
Cheers, yes this particular tank is larger then the majority of the tanks where i keep corydoras too. I collect the eggs as well, i put them in containers of approx 2l, where i hatch them. Once hatched, sometimes on the day sometimes as the yolk sack is consumed i move them, alittle depending on time and tank availability. They are then put in a tank between 12 and 54l where as i start them on microworm. It's on my to do list, sometime in the future to make a video about it. Napoensis fry don't compete to well against other species fry with food, incase you're mixing them /Mike
@@aquaticmike Thank you, Mike. No, I don't mix the fry. I tend to spawn them one batch at a time. I didn't feed mine on microworms because, looking at the fry under the microscope, the worms are larger than their mouths. The latest batch are on day 9 and I am getting 2 to 3 deaths per day now, but this may be due to my feeding them on freeze dried brine shrimp which is causing a nitrite problem in the tub. So I am doing 2 water changes per day now. I have no problems raising C. similis fry, nor C. pygmaeus fry.
Ah okey, i havn't looked at them under a microscope, sometimes i also add some sera micron along with the microworms but i havn't done this with all of the batches i have raised. Whether if they actually ate the microworms or if they found microorganisms at the filters before heading onto the microworms i can't say for certain. I've raised between 1 and 2k napoensis to adults, all of the first tanks they head into have sponge filters, most often sand and ramshorn snails, i have no plants in them but having plants should just add more places to find micro organisms. I would then give them gel food, previously repashy with own ingredients added. Since Brexit we can't get it anymore so i've now started making my own gel food from scratch
@@aquaticmike I don't move the fry into larger containers until after they are over 10 days. And only once they are 21 days do I put them into filtered tanks. Maybe they don't get the benefit of microorganisms off a sponge filter? I am currently putting together a larger 2L tub with a flow through filtration system and some sand. Perhaps I should try giving them repashy? Thanks for your advice, like most Swedes your English is very good, and thanks for taking the time to message me. Have really enjoyed watching your videos and have subscribed.
Thank you for the feedback and for subbing. I believe them to be eating some of the small micro organism around the sponges, similar to keeping javamoss when colony breeding. They provide both small micro organism a place to filter feed small food particles and a hiding place, not that the hiding place is needed in a fry only tank but. As i don't live where i have the tanks and work shifts i have been more successful moving them early, i know alot of people keep them in the hatching container for the first 1-2 weeks tho and change water before every feeding. I don't change water every day since where i keep them there's filters somewhat decreasing the risk of ammonia and nitrite. I do however change water on their tanks more often. Sadly i don't have that automated where i'm at atm, but hopefully in another location in the future. Regarding gel food i normally start using that between 1-2 weeks of age and then i add in some comercial base food at around the size when i move them to larger tanks, around 1.5 - 2.5 months of age alittle depending on tank availability and what species i add together and the size of the fry. Adding a group of larger napoensis or pygmaeus with for example aeneus or schultzei works to some extent meanwhile raising smaller pygmaeus or napoensis with larger aeneus or schultzei does not work as well, or atleast i have experienced the more delicate fry to get out competed to a larger extent then.
Jeg kjøpte 6 av disse på auksjonen i dag. Er veldig fornøyd! De er veldig aktive og svømmer i hele akvariet rett etter jeg slapp dem ut. Åpenbart kvalitetsfisk fra et godt hjem😃
Hej Frode, tack för att du stöttar mig både här och genom auktionen. Kul att höra att de kommit till ett trivsamt hem ^^ Skulle du undra över något så är det bara att dra iväg ett meddelande annars kanske vi ses nästa gång :)
Great video Mike. Luxury accommodation for corys. I keep mine in smaller tanks with almost identical water parameters. They spawn quite easily for me, but they're manic, yours are quite laid back by comparison. I collect the eggs and get about 90% hatch rate from them, but I can't seem to raise the fry very well at all. Out of the last spawning I raised 3 out of about 130 eggs. I start the fry on infusoria after they absorb the yolk sac, 48h, and they seem fine but after 5 days they slowly start dying off. 1 or 2 at first but then by day 10 there are only 12 or so left. Daily water changes with clean, warm water, good aeration and floating plants in the rearing tubs. How do you hatch and raise yours, please?
Cheers, yes this particular tank is larger then the majority of the tanks where i keep corydoras too.
I collect the eggs as well, i put them in containers of approx 2l, where i hatch them. Once hatched, sometimes on the day sometimes as the yolk sack is consumed i move them, alittle depending on time and tank availability. They are then put in a tank between 12 and 54l where as i start them on microworm. It's on my to do list, sometime in the future to make a video about it. Napoensis fry don't compete to well against other species fry with food, incase you're mixing them
/Mike
@@aquaticmike Thank you, Mike. No, I don't mix the fry. I tend to spawn them one batch at a time. I didn't feed mine on microworms because, looking at the fry under the microscope, the worms are larger than their mouths. The latest batch are on day 9 and I am getting 2 to 3 deaths per day now, but this may be due to my feeding them on freeze dried brine shrimp which is causing a nitrite problem in the tub. So I am doing 2 water changes per day now. I have no problems raising C. similis fry, nor C. pygmaeus fry.
Ah okey, i havn't looked at them under a microscope, sometimes i also add some sera micron along with the microworms but i havn't done this with all of the batches i have raised. Whether if they actually ate the microworms or if they found microorganisms at the filters before heading onto the microworms i can't say for certain. I've raised between 1 and 2k napoensis to adults, all of the first tanks they head into have sponge filters, most often sand and ramshorn snails, i have no plants in them but having plants should just add more places to find micro organisms. I would then give them gel food, previously repashy with own ingredients added. Since Brexit we can't get it anymore so i've now started making my own gel food from scratch
@@aquaticmike I don't move the fry into larger containers until after they are over 10 days. And only once they are 21 days do I put them into filtered tanks. Maybe they don't get the benefit of microorganisms off a sponge filter? I am currently putting together a larger 2L tub with a flow through filtration system and some sand. Perhaps I should try giving them repashy?
Thanks for your advice, like most Swedes your English is very good, and thanks for taking the time to message me. Have really enjoyed watching your videos and have subscribed.
Thank you for the feedback and for subbing. I believe them to be eating some of the small micro organism around the sponges, similar to keeping javamoss when colony breeding. They provide both small micro organism a place to filter feed small food particles and a hiding place, not that the hiding place is needed in a fry only tank but.
As i don't live where i have the tanks and work shifts i have been more successful moving them early, i know alot of people keep them in the hatching container for the first 1-2 weeks tho and change water before every feeding. I don't change water every day since where i keep them there's filters somewhat decreasing the risk of ammonia and nitrite. I do however change water on their tanks more often. Sadly i don't have that automated where i'm at atm, but hopefully in another location in the future.
Regarding gel food i normally start using that between 1-2 weeks of age and then i add in some comercial base food at around the size when i move them to larger tanks, around 1.5 - 2.5 months of age alittle depending on tank availability and what species i add together and the size of the fry.
Adding a group of larger napoensis or pygmaeus with for example aeneus or schultzei works to some extent meanwhile raising smaller pygmaeus or napoensis with larger aeneus or schultzei does not work as well, or atleast i have experienced the more delicate fry to get out competed to a larger extent then.