i dont know, but i have 3 sterbai corys and 2 are like you say, inseperable, and whilst the 3rd is with them only half the time so i worried a little. But then as they grew i realised i had 2 males and 1 female (1 male and 1 female in the 2 that stick together) so i think its just that theyve formed a pair. I have also added 3 more anyway so hopefully hell not feel so left out.
hopefully someone who knows something about there behavious will be around these parts soon to give you a more definitive answer.
all the best.phil
I feel bad for the loner....should I try and add another? I had thought they did best in odd numbers.
