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Congo Killies - PageSuite

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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

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