I recieved ten celestial pearl danios about a month ago and put them in my 180 gallon paludarium. Its half land, half water. The water section is about 3.5 ft long by about 2.5 ft wide and 8 inches deep. When I ordered them I knew they were small, but I had no idea how shy they were. Well, I didn’t see them for a long time. I’d catch a glimpse of a few for a second, then they’d see me and swim to another corner. Well, they are finally coming out more, getting used to captivity. But, they are still lost in this aquarium and I think they have trouble finding food, despite being the only inhabitants, because I have lost a few. I only have five left. I think the last five would do better in a smaller aquarium, plus I’d love to be able to see them better. The only spare I have is a 2.5 gallon. Would this be too small, if so I’ll leave them where they are.