I seem to like modeling fish, and love it infact. My current fishy critter:
Thanks for the comments, but no disrespect, I kinda like the teeth as they are, it kinda gives the critter a rough touch…
[attach=19721]bigfish2.jpg[/attach]
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I always love the fish pics on the forum 
Your last render is the best of the bunch I believe. The accents on the fins makes it very intersting.