A few more from tonight. The smaller 5-6" RES seem to have brighter yellow colors to them while the larger RES are not so vivid, is there change in diet as they get bigger affecting color?
Also, in the 5-6" size class I am seeing slightly longer pelvic fins in the RES that I suspect might be male, the pelvic fins actually cover the urogenital opening when up against the body. Ones I suspect might be female in this size class the pelvic fins are well short of the opening. A little more investigation closer to the spawn should reveal if this natural variation in individuals, or an actual gender difference one could look for.
