do you like playing with the same thing day after day
variety is the spice of life
paper shredding in some birds can be a sign of nesting, boredom, likes the taste, likes the sound or feel of ripping paper, just for the sheer hell of it, etc etc etc
kitten cat biscuits soaked in warm water till soft
a little bit of glucose or honey in the water for energy
get some insects chew them up and then regurgitate for the chick
how much water are you filtering?
how many water dragons
probably an internal filter with sponge in it would be easiest but will need cleaning often
or a large capacity canister
do you have pic of setup?
don't forget your water dragons defecate in the water
so you will need a good filtration system or very frequent water changes
i ran swordtails for a long time with wd's, they bred well
giving you a species name is hard, but a colour name might be easier
try here for some photos for reference
http://www.fishlore.com/fishforum/angel ... lfish.html