Name
Scientific Name of Fish: Corydoras oiapoquensis
Hobby Name of Fish: Flag-tail panda cory
Method of Reproduction: Egg Scatterer
Number and Gender Distribution of Parents: Group of 6, mixed sex/unknown.
Origin of Parents: Tank Raised, Frank Cowherd
Approximate number of eggs or fry: Adults lay a handful of eggs daily. Of these, maybe a third are any good. I've spotted fry of various ages in the parents' tank.
Date of Hatch or Birth: June through July
Date of Free Swimming If Hatched: June through July
Approx. Number of Fry at 30 Days: 12-15.
Approx. Number of Fry at 60 Days: 1.
Aquarium Conditions:
pH (0 to 14): 6.0-7.0
General Hardness (ppm)
Average Temperature (F) 76-78
Salinity (if brackish or marine)
Average Nitrate (ppm)
Aquarium Size (L X W X H and Gallons): 10 gallon
Water Source: Tap and RO mix
Water Changes (how much and how often): 50% every 1-2 weeks.
Filtration System(s): Air driven sponge
Additives (Salt, iron, etc.)
Décor (Please include all that apply):
Live Plants
Plastic Plants
Leaves
Caves or Similar Hiding Places
Spawning mop
Substrate: Handful of sand
Lighting Type and Timing: LED Strip, 12 hours/day.
Food Fed to Parents and How Often: Mix of flake, frozen, and live blackworms, daily
Food Fed to Fry and How Often: Decapsulated brine shrimp eggs, golden pearls
I can't seem to post photos on this forum.
I use small sections of 3/4 inch PVC pipe to sink my yarn spawning mops. Interestingly, these fish really like to lay their eggs inside those pieces of tube. They also like to lay on the base of the sponge filter, where you'd think they couldn't possibly even fit, and on the filter itself. They don't seem to have a good rate of fertilized eggs and the eggs are heat sensitive/will not develop at all in higher temperatures. Since their eggs can be difficult to move (based on where they lay them), I add plastic plant mats to the tank so the fry can hide. They do not seem to eat their own eggs.
Hello Becca,
This is to confirm you are being awarded 20 points for your corydoras fry.
Thanks,
Raychel
Interesting post. I've never found any Corydoras oiapoquensis eggs, but they definitely are spawning from time to time. Not as frequently as yours, unfortunately.
We're at 30-60 days for these guys. There are at least half a dozen from older cohorts and more from younger ones. These continue to lay 5-10 eggs every few days. There are a higher proportion of infertile eggs than for other cory cars I keep and they are laid singly or in pairs, but not clustered.
Eggs are larger than sterbai, aeneas, venezuelanus, or CW010 eggs, which might account for the numbers. They don't handle being plucked from glass and moved nearly as well as other cory eggs, but seem to do OK if left in situ with the parents.
It's interesting to me how these fish lay just a few eggs every day. In my experience, most Corydoras tend to be all or nothing. Having said that, I recently have discovered that my CW069 have been spawning almost every day, ever since I removed the other fish from their tank. (Perhaps they were doing it all along but the eggs were getting eaten.)
Are the Corydoras oiapoquensis in a tank of their own?