alprazo is correct - from the photos, based on the convex dorsal fin and the claspers, this fish is a male C. griseum. That's a good thing, because I've seen female C. punctatum grow to over 55" long!
However, I'd skip the chloroquine, (no evidence of protozoan disease, and this drug has system-wide side effects) but I would treat the shark with praziquantel.
Bill
However, I'd skip the chloroquine, (no evidence of protozoan disease, and this drug has system-wide side effects) but I would treat the shark with praziquantel.
Bill