Japanese ricefish

Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Beloniformes
Family: Adrianichthyidae

Several species carry their eggs attached to the body between their pelvic fins.
The medaka, Oruzias latipes, is a popular model organizm used in research in developmental biology.

I like ricefish very much. If I had much of money, I could breed this fish↓