Congo Killies - PageSuite
Congo Killies - PageSuite
Congo Killies - PageSuite
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
The larvae two days after<br />
hatching. The body is still<br />
unpigmented and the<br />
yolk sac is very large.<br />
Seven days after hatching,<br />
the yolk sac is consumed<br />
and the small catfish start to<br />
develop their pigmentation.<br />
Now they need to be fed.<br />
March 12: Increasing activity between the adults, with<br />
first signs of the trembling courtship display. All the other<br />
occupants were removed, the substrate was replaced<br />
with fine sand, and one-fifth of the water was exchanged.<br />
March 15: The female, who was usually hiding in a corner,<br />
approached the male and the two fish often lay next<br />
to each other, now actively courting.<br />
March 17: The female began to mouth the sand in one<br />
spot, obviously cleaning it, while digging a pit. The male<br />
started to actively patrol the tank. The courtship became<br />
increasingly more intense when the animals met. This<br />
continued for another day, until the night of March 18,<br />
when the cleaning and courtship activities reached their<br />
peak. The male swam into the current from the filter<br />
return near the surface and slapped audibly with his fins.<br />
Meanwhile, the female dug the pit all the way down to<br />
the glass bottom.<br />
March 19: Around 11 in the morning, the fish spawned.<br />
Afterwards, the female guarded about 200 eggs in the<br />
pit. The male retreated into another corner to relax. The<br />
female lay directly on the eggs and fanned them with her<br />
large fins to supply fresh water and oxygen. Some 50 eggs<br />
were not fertilized and turned white.<br />
March 20: To be on the safe side, I removed the developing<br />
eggs to hatch them separately. I left subsequent<br />
clutches in the care of the parents, who cared for them<br />
quite reliably. I filled the 15-gallon (54-L) rearing tank<br />
with water from the breeding aquarium. A large airstone<br />
supplied oxygen, but I used no filter.<br />
March 22: The larvae began to hatch in the morning and<br />
When fed, the fry swim enthusiastically<br />
through the tank and gorge themselves<br />
on baby brine shrimps.<br />
AMAZONAS<br />
I. CHANG<br />
76