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2.1 egg collection

Yuko Wakamatsu
Nagoya University

2.1.1.0 cleaning tanks

  1. Put a fist-sized clump of polywool in the mating tank near the surface of the water.
  2. Let it stand for a week or less. Medaka spawns the eggs on the clump of polywool. Move next step as soon as you obtain enough number of eggs.
  3. Transfer the polywool to a new tank.
  4. Wait for the eggs to hatch.


  • The polywool should be placed near the surface of the water so that sufficient oxygen is supplied to the eggs.

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Last-modified: 2019-04-04 (Thu) 14:18:41