Thanks for the replies..
Thanks guys..
They are about 4.5 years..
The one with the solid yellow lines across the body is extremely spiny and and quite a few bristles coming out from the head region, were as the one with dotted yellow across the body doesnt really have any spines along the body, and maybe 1-2 bristles coming out from the head area..
The size is as mentioned above closer to the 9cm mark.
I just spent all last week doing water changes and playing with the temp, i did notice the one with full yellow trying out a few caves - by that i mean: he was totaly in a circular cave with just his head poping out - i have never noticed the one with broken yellow lines in a cave.. 'she' hangs around them, but never in them..
One thing though, they dont seem to be too social with one another. with the broken yellow lines one always chasing the full yellow line one away...
Not sure what the above means - i suppose only time will tell.
thanks for the repsonces..