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This may be of interest:
The tooth, the whole tooth and nothing but the tooth | Features | Practical Fishkeeping...
Awesome little piece of fish physiology! I am fascinated not just by keeping fish but also their biology, ecology, and physiology. Here is another creepy set of chompers you won't believe is from a fish:
It is the sheepshead fish, a saltwater game fish found off the eastern coast of the US. Creepy, no?