I purchased my first bichir (sengal) he's very small. He is about an inch long. He's in a 10 gal until he's a little bigger. He's in there alone. I had him for about 4 days. I know it's normal for him to float around but not eat? I tried blood worms, flake, guppy fry, and shrimp pellet. I'll get water stats when I get home. Is this normal?