clown mixing question

[herp_house]

i have a 37 gallon tank with 2 mid sized percs in it and a tomato clown thats a little bit smaller than the two, and i now also have a 75 gallon with a large perc and another mid sized perc in it. i was wondering if i can put the 3 from my 37 gallon in my 75 gallon or will all hell break loose?? also with percs will they get lighter in color when they get bigger?? my big female is really light compaired to the other 3 percs.

 

[viper_930]

I'll bet they'll fight. Two females in a tank is a fight to the death.

 

[herp_house]

what about if i isolate the smaller female but keep it in the same tank for a while, will it turn to a male and make things work???

 

[viper_930]

Females cannot turn to males, but males can turn to females.