Generally if a male is sexually mature, the clasper are easily visable as they will protrude well beyond the disc margin.
It may help to note that females tend to grow faster and larger than males IME.
Sand does stick to rays sometimes, but usually is a problem associated with new sand, and it goes away with time.
Yes quite often young retics are spooked by just about anything. Even a new food can send them dashing with only a touch. This probably one of the reasons I like to have a sand substrate, it allows them a place to feel safe.
Males also seem to be more prone to the spooking, as they are generally more cautious.
What size was your ray when you purchased it? And how long have you had it?
AJ
It may help to note that females tend to grow faster and larger than males IME.
Sand does stick to rays sometimes, but usually is a problem associated with new sand, and it goes away with time.
Yes quite often young retics are spooked by just about anything. Even a new food can send them dashing with only a touch. This probably one of the reasons I like to have a sand substrate, it allows them a place to feel safe.
Males also seem to be more prone to the spooking, as they are generally more cautious.
What size was your ray when you purchased it? And how long have you had it?
AJ