Oryzias minutillus
0. minutillus (male). Photo by K. Takata
Original description:
- Weber, M. (1894) Zool. Ergebn. einer Reise in Niedel., III: 426.
- Weber, M. and L.F. de Beauform (1922) The fishes of the Indo-Australian archypelage. 4: 370-374.
Characterization:
- D, 6-7; A, 17-21; L.l., 27 or 28; L.tr., 10;Predorsals, 19.
- This species has the smallest body size (SL, ca. 13mm) in Oryzias. Females spawn less than 4 eggs at a time.
- Karyotype; 2n = 30, 34, 42, NF =42, 44.
(Abbr. A: anal fin ray's number, D: dorsal fin ray's number, L.l:, lateral longitudinal scale's number, L.tr.: lateral transverse scale's number, P: pectral fin ray's number, SL: standard length, V: ventral fin ray's number)
Habitation area (Distribution):
Shallow pond, ditch and paddy field in Central, North, South, Southeast and Northeast Thailand, Yunnan and Rangoon.
Breeder:
K. Takata (Breeding place; Lab. Embryol., Fac. Sci., Shinshu Univ.)
References:
- Magtoon, W., N. Nadee, N.T. Higashitani, K. Takata and H. Uwa (1992) J. Fish. Biol., 41: 489-497.
- Magtoon, W. and H. Uwa (1985) Proc. Japan Acad., 61B: 157-160.
- Scheel, J.J. (1969) J. Amer. Killifish Assoc., 6: 5-7.
- Takata, K., M. Hoshino, W. Magtoon, N. Nadee and H.Uwa (1993) Jap. J. Ichthyol, 39: 319-327.
- Uwa, H. (1993) Fish Biol. J. Medaka, 4: 41-44.