The mandarins are doing fine so far. The female Blue Mandarin will chase either or both Target Mandarins. The male and the female target get along, but lately their doing their chase again (with the female always running away). I'm continuing to feed newly hatched baby brine shrimp every other day, so I know all the mandarins are getting some food for sure that way. The larger fish don't know what to do with the tiny jittery food.