First time I am having koi fry.
I setup a 75 gallon rubber maid stock tank in advance with some string algae and floating water cress from the main pond. Then a week later I put koi fry that were a few days old in the stock tank. I initially fed them some hard boiled yellow egg yolk. Then I switched to Hikari first bites.
I have between 100 and 200 koi fry in the 75 gallon tank. They seem to be always eating algae or maybe zooplankton or infusoria in the water. I'm starting to get a healthy green growth along the sides of the tank.
I am now mixing some Hikari first bites into a cup of water and with a spoon putting drops of the water/first bites around the tank so the fry can find the food. Mostly the fry ignore the food and nipple away at the string algae.
This is very different behavior from the parents who are extremely competitive for food when being fed.
Should I stop feeding the koi fry and just let them eat algae/zooplankton?
Any comments or thoughts would be appreciated.