Its a IM 25 gallon lagoon. I'm not sure what happened to the 2 peppermint shrimp, I kinda think the one was a molt gone wrong. The Wheeler's shrimp Goby jumped through the netting of the lid. The first time he did it I caught it right as it happened and got him back in, but a few days later he did it again and ended up on the floor overnight. The Fire Shrimp I'm worried I might have injured during a water change. I had a pump with tubing to gently add the clean water, but my daughter broke it right before the water change so I tried just pouring the water in and the next morning it was half buried dead in the sand. That left the Firefish as the only thing besides snails and two hermit crabs and I think the clownfish then targeted it since there was what looked a bite out of the gills on it's body. Honestly, it was a very discouraging month. It started out with everyone being happy and adjusting well to the DT and just went downhill. I don't know if I'll replace the Peppermint Shrimp, but everything else I'd like to replace with the same species and eventual will add in a Randall's Pistol Shrimp and some Porcelain Anemone Crabs once there's some coral habitat.