Well, I couldn't pass him up. I got him from the same store that I had bought Felix (my yellow CT) and Sarpdeon (my black CT). Since both of them had died so quickly, I didn't want to buy from there again.
But this new guy was so cute that I couldn't pass him up. He is pretty tiny compared to Claude. A red CT with white tips on his fins (I guess he could be considered a butterly) and a smattering of silver close to his anal fins. I'm thinking of naming him Renard (fox in French), because his colouring reminds me a bit of a fox. ;)
In the store there was also a blue/green CT that had a bit of dragon in him! But I had no more space or money for him.
As for the water situation, I found two bottles of water, 1.5 litres each. I took out some of the water of in the 5 gal and poured the botteled water in instead. So hopefully i will have better luck with this guy.