Is it Ick or the fish? please help

[fishbones]

well hello,
I am new to blogs, so heres the basics. need a little advice concerning a sick little fish ". I had got three clown loach's within a week they had ick. one poor guy died, one healed, but the third is still sickly looking. Its been about a month since i treated my tank last. The healthy loach has grown a significant amount yet still has scars on his sides. The sickly fish "sticky" has not grown at all and looks really unhappy. Yet he comes out to eat when I feed them both flakes and blood worms.

What should I do? should i start treating my tank again? is it normal for loaches to get scared because they dont have scales? Stunted growth from ick? if you can answer my questions please help. Thanks fishb:thanks
nes

 

[LyndaB]

Welcome to the forum!

What size tank is this, is it cycled, and what other fish are in there?

Clown loaches require a very large tank, especially with multiples.

How did you treat the tank for ich originally?

What are your readings for ammonia, nitrite and nitrate?