Sorry for the delay. Had company in over weekend. I love, love, love the pond! At a quick glance, I would say your orange and black fish is a girl. The calico may be too. The females usually are shorter bodied and thicker. The males won’t be as thick. When they get old enough to breed, the males will grow tubercles or white spots on their front fins and Gill plates. That’s the easiest way to tell a male. If you’re really good at it, you can look under their anal vent (where they poop). A female will have a tiny point outward where the males will contour in ever so slightly. Sometimes I can tell and sometimes I get fooled. I guessed 3 of mine correctly but one I thought was a male turned out to be female. They’ll let you know sooner or later. Keep the pics coming. I keep a net over my pond too!