Mine is a real biaaatch when the lights are on. It's like she wants to show me who's the boss in the tank and trying to get my attention. No issue with lights off and she seems to be pretty mellow. But when they are on, the other fishes appear to get a little more stressed and wary of her getting a little more active. She is just nipping at other fishes for now once in while, but she swallowed a clown loach a week ago. The loach was 3" and more than halfway in her throat as I could see its tail still. She spit it out as I grabbed my net. Loaches have been in the tank since I got the marm, never had any issue prior to that accident. Loach was still alive but didn't make it.
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