About 2 months ago I set up a vivarium for something different than a regular tank. The front half is water about 8 inches deep with some driftwood and a rock and gravel bottom. The back section is home made potting soil without ferts and plants. There is also a waterfall in the back corner.
After setting it up and cycling I purchased a few feeder live bearers and a feeder crayfish to see how this set up would work out. Feeders have survived fine and the crayfish has molted 4 times in 2 months. I always leave the shell in the tank and he eats it in a day or two.
Anyway, I noticed that I hadn't seen the crayfish in two days and thought that was kind of odd because he always comes out at feeding time and does a dance trying to get the flakes off of the surface before I give him a couple of shrimp pellets.
I took the cover off of my tank and was going to look behind the rock and noticed a mound of dirt in the land section. There is a HUGE hole that he has dug and I can see all the way to the bottom of the tank but cannot see him. He must have done a tunnel once he hit bottom.
My question is why did he do this and does he come out to feed after the lights go out? I grew up catching crayfish for fun but never even imagined that they could dig or even come out of the water. I know that I am not going to be sticking my fingers down that hole, after 4 molts he has gotten quite large.
After setting it up and cycling I purchased a few feeder live bearers and a feeder crayfish to see how this set up would work out. Feeders have survived fine and the crayfish has molted 4 times in 2 months. I always leave the shell in the tank and he eats it in a day or two.
Anyway, I noticed that I hadn't seen the crayfish in two days and thought that was kind of odd because he always comes out at feeding time and does a dance trying to get the flakes off of the surface before I give him a couple of shrimp pellets.
I took the cover off of my tank and was going to look behind the rock and noticed a mound of dirt in the land section. There is a HUGE hole that he has dug and I can see all the way to the bottom of the tank but cannot see him. He must have done a tunnel once he hit bottom.
My question is why did he do this and does he come out to feed after the lights go out? I grew up catching crayfish for fun but never even imagined that they could dig or even come out of the water. I know that I am not going to be sticking my fingers down that hole, after 4 molts he has gotten quite large.