Alright, so I recently went to my LFS to see how amazing the swordtails looked, their large size and color. I bought six, being the stocking for my next two weeks. This is a new 60 gallon tank, which was cycled with TTS+ CORRECTLY, but the swordtails started acting weird after two days. I got two males and four females, and all of them hide under this rock-like cave? Its kinda smal, and in the back of the tank but they all hide, along with the plants behind. They dont look to pregnant, as their gravid spot isnt HUGE and sticking out, its kinda faintly, black... Anyways, I will post photos later but is their anything I should worry about them ALL hiding in this small cave? Would like to say a few more things... They kinda moved the sand so they can all fit under the rock, as you can see the sand kinda slope downward, and its not a preditory issue as they are the biggest fish, and the other fish are a few baby mollies and some cories. Any help appreciated, thanks.