green chomis spawning

Ay one ever have green chromis spawn in their tank?? for the past few weeks one of my green chromis has been very protective of my frag rack, chasing and biting any one or any thig that got close to it(my self included). Today there are eggs all over the frag rack, and the chromis is getting violent with any thing that approches and moving hermits. cant get the best pictur but heres what got. if this is what i think it is what can i do?
 
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