This one sounds like Melanotaenia herbertaxelrodi more affectionately
know as the Lake Tebera Rainbow :)
-> Then I have another question, How do I sex the rainbows?
Well if you get fertile eggs then you know you have both sexes.
hehe.....If the end of the first dorsal is pointed and overlaps the
beginning of the second dorsal fin then you most assuredly have a male.
Also males are deeper bodied than the females. Many rainbows flash, 99%
of the time its the males that flash, though there was a thread here on
some females that flash. Usually the males are more generously colored
than the females. The fish that displays while flashing is the male, the
female looks non-chalant. My rainbows loved to spawn in the morning and
i could observe this behaviour best then..... Flashing in many species
is characterized by a neon type of stripe beginning on the snout and
going back across the top of the fish toward the caudal. The males can
turn this off and on at will seemingly as fast as a neon bulb hehe
-> I have four Boesemani that is rather big. All of them shows this
-> greenish shine from there heads sometime and two of them are very
-> found of eachother, but nothing seems to happen. What shall I do?
HHHMmmmmm....sounds like you might have only females. Males have a
lovely red, orange or yellow color in the back half of the fish, the
females do not!
Klaus