ya im already kicking myself in the butt. I tried to put them in the same 10 gallon being so small but one took a chunk out of the others tail so i moved one to a ten gallon that has no lid but i only put 5 gallons of water in it cause i knew they were jumpers but i didnt think at that size he could jump out of the tank but he did and now im down to one

I put duct tape all around the back of tank were the one still lives. The only open part is were the filter flows in. I am so mad i lost the other one. lessoned learned. If they say jumpers then i guess it doesnt matter how much air space to the top of tank you leave.