i have a 130g tank with a yellow tang, two yellow tail blue damsels, a clown, and a three stripe damsel. These are all fish i'v had for a long time, and they used to be housed in my 33g tank, and i'v up graded. In the last week i added 2 sleeper gobies, and a royal gramma, but yesterday, they were (the three new fish) all dead. My conditions are all great, and i have various snails and crabs, an anenemie and some corals, and they are all thriving. What could have coused the deaths? My only idea is that i was floating them in the tank, directly under the mh
lighting, and they might have gotten too hot, and then swaw down where the water was cooler, and this could have been two much of a shock to them, but i'm really just guessing at this poing. What do you guys think? Are gobies and grammas a dellicate fish?