i have 4 banana cichlid.All are living peacefully and have black bar on their dorsal fin and according to me 1 is male and 3 are female.they all are near 2"-2.5" but are not showing signs of breeding.So,at what age will a banana first breed and is it sure way to sex them by black bar as 1 have distinct black bar on dorsal and anal fin but 3 are having very faded black bar only on dorsal fin and brown or yellowish brown on both ventral fins.So,are they females and also a male looks disinterested as he has no other male companion to compete with and is having no hurry to breed as he see all females except him
but i also tried venting and was unable to guess but i think that 3 were females and 1 was male so please suggest is black bar sure way to guess their gender.