I have set up a mini pond and want to get 2 maybe 3 of these but I cannot find much info on them. from what I have found they get around 5 or 6 inches. The set up I have is a black tub (3'x2'x8") with a sponge filter and a 30-40 gallon whisper filter as filtration. I also have what I think is some amazon sword. But yeah any info and tips on them would help a lot. 
