WorldwideKoiClub

jhitz12 · Posted: Mon Jul 23, 2007 1:58 pm Post subject: Koi eggs and fry (Hatching)

When the fry have hatched, they will instinctively seek shelter and hide in any cover they can find. The spawning ropes are ideal for this. Using a special sticky pad on their heads, the fry attach themselves to the ropes' fronds, or to the vat wall. At this stage in their development, the young Koi have no swim bladder, mouth or vent. They breathe by absorbing oxygen through the fine blood capillaries that surround the yolk sac, which is still attached to the gut. It is essential that there is plenty of oxygen entering the water at this stage, as a reduction in the quantity of dissolved oxygen in the incubator could lead to mass mortality.

The Koi fry have only one fin, which encircles the posterior end of the body. As the Koi grow, feeding on their yolk sac until all the yolk is utilized, they develop paired fins, a mouth and other organs. After two or three days, the young Koi swim up to the surface and take two or three gulps of air, which they force into their swim bladder. They then start to swim freely in mid water, usually congregating around the air stones, a sign that they are ready to be fed.

RamilDy · Joined: 14 Jun 2007 Posts: 105 Location: Cebu

hmmm you got so much info for a beginner 8)

jhitz12 · Posted: Tue Jul 24, 2007 4:04 am Post subject:

nah! just a little bit resourceful! and i just love reading especially on those things i'm most interested of... thanks for the compliment:-)

RamilDy · Joined: 14 Jun 2007 Posts: 105 Location: Cebu