I've had L. brevis 'Ikola Sunspot' for many years, and they are fairly common in the hobby in my area (NE Ohio). The other day I got hold of four L. brevis 'M'toto'. At least in these parts that's a more unusual color variety, which is a lot more stripey than the Ikola Sunspot. My four individuals were simply sold as group, ie no indication of male or female. They are all fairly large, and I am starting to wonder if I didn't buy 4 males. Other than size, is there an easy way to determine the sex, eg is the side of M'toto females also more yellow than that of males, as is the case in the Ikola Sunspot variety?