Heh, was a running joke. Someone called clown loaches the ADHD poster children of the fish world and, well, I couldn't resist.
And since you had asked previously about how to do stuff like that, I'll give you a basic outline of what I did:
Found the 2 pics that I wanted to combine (that can be a pain sometimes, finding exactly what you want).
The one with Jerry also had a handicapped girl in it, and I needed to remove her. I used the clone tool that was mentioned previously. Picked an area on the curtains that was clear, and used the clone tool to cover up the girl (by clicking on the area I wanted to copy with the shift button already depressed, then moving the cursor to the area I wanted to cover).
Then I went to work on the loach. I did a rough outline with the freehand selection tool (the lasso), then cut n pasted it as a new image. I used the eraser tool to get rid of all the extra stuff.
I then copied and pasted THAT into the Jerry pic. I then used the deformation tool (the box thingie under the magnifying glass/zoom tool) to rotate and resize the loach (it was too big and not at the angle I wanted).
One I cleaned up all the edges so everything looked neat, I merged all the layers and used the effects tools (enhance photo) to match saturation and color (didn't get it exactly right, but worked ok).
The whole thing took me about 10 minutes (not including the time I took to find my base pictures).
Oh and btw, LOL as you noticed, getting the shadows right is REALLY important LOL that one legged boy pic is a hoot!