1.3.1. Food

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1.3.1 Food

Yuko Wakamatsu
Nagoya University

Wakamatsu, Y. (1997) Fish Biol. J. Medaka, 9: 49-50.

1.3.1.0 General information

I present here a part of our medaka breeding protocol. Please refer to other sections in 1. Keeping medaka to see the overall breeding procedure. Using the procedure, in our hands more than 80% of medaka fry reach the adult stage 1.5 to 2 months after hatching.

1.3.1.1 Artificial food

• Foods with a small diameter are suitable. We use artificial feeds with small particle size (300¦Ìm in diameter) (Otohime ¦Â1, Nisshin Feed, Tokyo) for adults, and smaller particles (100¦Ìm in diameter), prepared from the adult food by grinding and passing through a sieve, or an artificial food with small particle size (Fry Feed Kyowa A, Kyowa Hakko Kogyo Co. Ltd., Tokyo) for larvae and young fry.
  
• Feeding is twice or three times a day.
  
• Paramecium is a good feed for larvae.
  
• We also use brine shrimp larvae as feed for fish from two weeks of hatching to the adult stage.