I don't know what's going on with my new ghost shrimp. I got them just the other day (Friday), and I got about 20 of them from Petsmart. I purchased them so I could get some entertainment for my glass-surfing CT male (as bad as it may sound), and have 6 in there with him currently. I've lost 4, which doesn't surprise me (one in my betta's tank, 3 in the shrimp tank), and the others are looking healthy enough, and I'm making sure they eat. However... the ones in the shrimp tank are acting, well, odd. As the title says, they're jumping. Kind of.
This morning before I left for work, I had one shrimp that managed to get itself OUT of the water, and up about an inch from the surface (tank was only half full), and was stuck to the side of the tank. I have no idea how long he was there, but I flushed him back into the water with some of the tank's water. It seemed ok, but I have no idea how long it was up there like that. Within the next half hour, it did it two more times, in the same spot. Now, 5 hours later, I returned to my apartment and went to check and see if I had any more suicidal shrimp. As soon as I got close, 6 or so of them jumped out of the water, almost clear across the tank. I have never seen or known shrimp to do this >.> Especially since the 6 ghosties in with my betta happily hang out around the bottom. Not the others, they love climbing all over the tank, and have made a habit of gliding around just under the surface.
Its a 3 gallon tank with about 10 ghosties (not sure how many I have left in there, but I can only ever count 8 at once. I'm supposed to have started with 20, I've lost 4, and 6 are in my betta's tank, meaning I should have 10 left). I know its probably over stocked a little bit, but I didn't expect this many to live this long. I do 20-30% water changes daily, and they're the only stock in the tank. I've got some gravel in there, not even a full layer over the bottom of the tank. Its heated to 78 (+/- 2), and is NOT filtered. I have one plastic plant in there for them to hang out on, and a Marimo moss ball.
Anyone ever had ghosties, or other shrimp, do this? Anyone know why they would? This behavior only started today.
The photo is what the tank looked like yesterday. They're happily hanging out on the plant, and none are near the surface at all. Today, it was the opposite. Half are buzzing the surface, the other half are just hanging out wherever they find themselves.