Personal opinions for leisure, not to be taken as advice. Continue reading only if you agree that I am not liable for any advise, injuries, losses or errors.
Apr 7, 2012
A dwarf species and the third mentioned so far in the blog. C. hastatus are quite easy to spawn without much effort in planted aquarium setting probably due to they are more accustomed to it as their nature habitat. Likely you may not even know when they did.
About an inch at adult size, C. hastatus is a good mid-swimmer and are a welcome addition to a mainly bottom dwelling corydoras tank.
C. hastatus pair on the upper left of the community tank in the right photo. As you can see they are quite small compared to the other corydoras species - C. seussi pair and C. agassizii in the foreground.
L-Pic: C. hastus egg - almost translucent
C-Pic: C. hastatus egg (L) C. duplicareus egg (R)
R-Pic: Different stages of fry development
Their eggs are relatively small of about 1mm and about half the length size of C. duplicareus. At birth and days after, babies are bottom dwellers.
Notice the unique pattern of few days old fry in the extreme right of the left photo, R-Pic. Do remember to click the photo to get a close-up view because seldom we get a chance to see them. (Miracle of Life Forming).
C. hastatus, Adult (L), Juvenile(R)
Breeding is easy. The catch is how to raise the frys to adulthood since at birth they are much smaller and quite picky on the food that they will eat. Hunger strike till death is not uncommon. :( Micro live brine shrimps have to be specially hatched to ensure their survivals as they prefer live food that are able to fit into their small mouth. Alternatively small daphnia or some micro organisms which are found in ponds may do but will not be as clean.
The process of hatching Brine Shrimp is a bit tricky and tedious if you do it the first time. There are different methods and quality of the eggs to consider. If you are interested to do an internet search, there is also complete kit on sale. The hard part is ability to purchase quality brine shrimp eggs locally and timing their hatching to support the first few feeds critically needed to ensure the frys do not die of hunger.