Short form in Genetics!

dt = double tail, recessive
c = cambodian, recessive
m = melano (black), recessive
vf = varigated fins (butterfly)
nr1 = non-red (yellow), recessive
nr2 = non-red (orange), recessive
Bl/bl = blue, green or steel, co-dominant
Si = spread irridocyte, dominant
op = opaque, partially dominant
Mb = marble, partially dominant

Taken from ; www.bettasocietymalaysia.com.my ; Ming Han