Ok I have a fowlr tank and a pair of 19 year old clowns, my first 2 fish ever. The clowns have hung out in the same corner of the tank for the last 10 years. The female has not eaten in four weeks, but the male would hang around her and come out and eat often. Suddenly tonight the female is in a different corner of the tank and on the opposite side of the tank. The male is nowhere to be found. The only predator I may have is a tiger brittle star that is only 4 inches in diameter. I have had the same type of brittle stars over the last 19 years without incidence. The skimmer cup did go crazy and overfill suddenly. Can a little brittle star catch and kill a healthy fish? Did the female lay eggs deep in the rocks and the male is protecting them? I am at a loss here. Thanks.