Hello, I was interested in buying a small blue lobster to "living" up my aquarium, and also the benefits of it eating the leftover food from the gravel. I purchased it today and placed it in the tank at 4pm, still in the water bag. All of my existing fish were acting normal as usual. After 15 - 30min I let him lose into the tank, and he's been at the bottom the entire time. However, ALL of my fish decided to chill in the top left corner of the tank. All facing outward as if they want to leave. My big molly (I call her Oreo) usually "nibbles" my finger when I place it at the very top of the water, follows me around, and even allow me to pet it. Now?....she's in the corner as well. Here's the information about my babies: How long the tank has been set up: 3 weeks Aquarium size: 10 Gallons Fish: 1 big molly, 3 medium mollies, 1 guppy -- added a small blue lobster today Plants and inverts in the tank: 2 fake plants, pink gravel, clear colored gems/rocks Chemicals used: ph balance, water clarifies, & stress coat Maintenance schedule: water clarify once a week + algae scrub around the inner glass of the tank, filter cartridge every 3-4 weeks Water changes: Not yet Are my fish afraid of the new blue lobster? Attached is the best photo I was able to get. Any help and / or advice will be greatly appreciated!